Malicious PDF — malware analysis report

Static analysis result for SHA-256 ca6ca484a00921e8…

MALICIOUS

PDF

421.0 KB Created: 2022-03-19 18:09:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-07
MD5: 50a613299f2164bd1a745da4d7ec4c50 SHA-1: c96d4fb48da03cd02d1a0ecdb343d50b6eae5ebc SHA-256: ca6ca484a00921e8d5ac40b8990b7186a8cd8fd9f63b72dcd73f01a62d0f4ef4
224 Risk Score

Machine Learning

  • Nyx PDF Classifier suspicious score 0.2710

Heuristics 9

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF link to algorithmically-generated URL high PDF_RANDOM_URL_LINK
    PDF contains a clickable HTTP(S) link whose host looks algorithmically generated (pronounceable-random labels) and whose path/query carries a long high-entropy token. This is the randomized-redirector pattern of malspam phishing lures — the visible document is only a prompt — not a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Clickable PDF combines external action with parser-evasion structure high PDF_ACTION_PARSER_EVASION
    PDF has an external clickable URI together with object graph or xref structures that make parsers disagree, such as divergent duplicate objects, parser divergence, or xref offset mismatch. That combination is stronger than a plain link: the document is both an outward-action carrier and a parser-confusion/evasion sample.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://loheb.co.za/XSRYdR1H?utm_term=assassin%27+s+creed+black+flag+ps3++free PDF link annotation
    • http://www.shriramhariram.com/kcfinder/upload/files/47903164520.pdfIn PDF document text
    • https://yam-token.com/business_school/uploads/file/dupifewav.pdfIn PDF document text
    • http://duhochoangthanh.com/upload/files/jebiwe.pdfIn PDF document text
    • https://amoslodge10.org/ckfinder/userfiles/files/zibidonedizuvunozusagozep.pdfIn PDF document text
    • http://hotelhillwaypark.com/app/webroot/js/kcfinder/upload/files/66786614853.pdfIn PDF document text
    • https://yumasri.com/assets/ckfinder/userfiles/files/fujebavusijugivo.pdfIn PDF document text
    • http://protok.pro/upload/files/51513739359.pdfIn PDF document text
    • https://www.anep.it/ckeditor/kcfinder/upload/files/zoxomufipiterulik.pdfIn PDF document text
    • http://clinicaveterinariacittadivignola.com/userfiles/files/95399350552.pdfIn PDF document text
    • https://xn--cabaasalquimia-tnb.com/uploads/files/15493626507.pdfIn PDF document text
    • http://ieclop.pnl.ac.id/asset/kcfinder/upload/files/xarokuvulaval.pdfIn PDF document text
    • https://alwaysthesame.pt/site/upload/file/pewujo.pdfIn PDF document text
    • https://rallstarawards.us/nbloom/fckuploads/file/57409905992.pdfIn PDF document text
    • http://www.maarsehoveniers.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1621d9d94ccc91---fewijekojawazovotake.pdfIn PDF document text
    • http://forensique.ch/app/webroot/kcfinder/upload/files/wadaxebaludote.pdfIn PDF document text
    • http://etyekilovarda.hu/userfiles/file/sozowesapetebu.pdfIn PDF document text
    • http://otczenacts.com/media/files/53183577285.pdfIn PDF document text
    • https://sdyh.gr/wp-content/plugins/super-forms/uploads/php/files/4mejum7ov9obp686akrvfmfms4/33936344345.pdfIn PDF document text
    • http://mirjetours.com/uploads/zapizotirugaxirajijos.pdfIn PDF document text
    • https://evermoral.hk/upload/file/1646300180.pdfIn PDF document text
    • http://gemeinschaftshaus-grossmuss.de/demo/admin/editor/kcfinder/upload/files/labajoluzu.pdfIn PDF document text
    • https://www.lipfish.no/wp-content/plugins/formcraft/file-upload/server/content/files/1620a11a87cf61---lavimurimaxufagin.pdfIn PDF document text
    • http://digifast.cz/userfiles/berelotokariposugek.pdfIn PDF document text
    • https://www.drukwerkmax.nl/public/admin/assets/global/plugins/kcfinder/upload/files/popowumuzelafeji.pdfIn PDF document text
    • https://natyabio.com/uploadfiles/kuxapokuvo.pdfIn PDF document text
    • https://abicecream.ru/ckfinder/userfiles/files/88950948117.pdfIn PDF document text
    • http://2990592.ru/ckfinder/userfiles/files/wikasevokifinalig.pdfIn PDF document text
    • http://guide-eq.com/userfiles/file/20220306084841_iur7mz.pdfIn PDF document text
    • http://zit-tech.com/userfiles/files/gozafimitewexe.pdfIn PDF document text
    • http://venkateshservices.com/uploads/98648968453.pdfIn PDF document text
    • https://amkboiler.com/wp-content/plugins/super-forms/uploads/php/files/20civ0fsncm0rolcci8s0q398j/bukufakogudatedizepagotav.pdfIn PDF document text
    • http://www.fattyweng.com.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16219df5bead04---jegenojiwabege.pdfIn PDF document text
    • https://aawyx.com/sites/default/imageuser/file/10072465130.pdfIn PDF document text
    • https://charlesstreetvideo.com/userfiles/file/54006228865.pdfIn PDF document text
    • http://ogcdc.org/uploads/ck_upload/files/gafebegulatewisawofajiv.pdfIn PDF document text
    • https://uzmanwebci.com/calisma2/files/uploads/jejesimijoxelebonasowowod.pdfIn PDF document text
    • https://www.lorenzofranzone.it/wp-content/plugins/super-forms/uploads/php/files/31607ae4ac137c3446fcfa5ebbfc971e/72782661586.pdfIn PDF document text
    • http://keralastatetailorsassociation.com/userfiles/file/faregejojiduf.pdfIn PDF document text
    • https://kimyasaldubeller.com/upload/ckfinder/files/50890849990.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://dejavu.sourceforge.netIn extracted file (font_00_sfnt_off0005f654.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005f654.bin)

Extracted artifacts 5

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005f654.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F654 24744 bytes
SHA-256: 6ff6913e5e15d308353e30d81d7c6d906db205f80a286e71ca99b3e156719032
font_01_sfnt_off00063452.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63452 1680 bytes
SHA-256: 6c08887b596ecb472c5a0482df8c2f828d83fc5b5d16111ed0caa1fced1b35dc
font_02_sfnt_off00063c49.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63C49 16244 bytes
SHA-256: fddcbe21bdf9fb2753729b4ab5b26d7a3fbb01e3fe51d41ab0725360e25c189d
font_03_sfnt_off00065239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65239 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_04_sfnt_off00066960.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66960 10996 bytes
SHA-256: f029c3e04ca640bae026db63f2f28dae52bb3c9b813ee229aedb1e3374c39b13