Malicious PDF — malware analysis report

Static analysis result for SHA-256 8471a40ca8d15f70…

MALICIOUS

PDF

393.2 KB Created: 2022-02-13 18:36:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-04-05
MD5: 8d7fb7bd5024b2bbf2e0f3a1570de37e SHA-1: 03d70d567657fa2ea634e51370a9b3c211c23185 SHA-256: 8471a40ca8d15f70ee97b8a33c005074e545e6fe97702fcfe9a2265a14dbe7d5
191 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6448

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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.
  • 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.
  • PDF advertises pirated movie streaming/download medium PDF_PIRACY_STREAMING_LURE
    PDF rendered text advertises free full-movie streaming or download using piracy-brand names or a 'full movie + download/free/watch' intent phrase — recovered after folding the styled Unicode confusables the campaign uses to hide those keywords from plain-text detection. These are disposable SEO-spam carriers that route users to malvertising, fake-player, and scam pages; the PDF itself is inert.
  • 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 http://coss-wynn-reunion.com/clients/d/db/dbe3622004495b304d8703879a486b7d/File/bofot.pdf In PDF document text
    • http://rlponder.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/82198130720.pdfIn PDF document text
    • https://trotusgrup.ro/ckfinder/userfiles/files/96291560099.pdfIn PDF document text
    • https://mklaassen.nl/images/file/giragerawasakuzo.pdfIn PDF document text
    • https://hkdotbuy.com/editor_upload_image/file/zupedosazukamajana.pdfIn PDF document text
    • http://4rrecycle.com/files/file/xejuw.pdfIn PDF document text
    • http://oaklandscreche.ie/userfiles/files/bozaxasiti.pdfIn PDF document text
    • https://www.stc-tn.com/webroot/upload/files/69353167204.pdfIn PDF document text
    • http://theexplorerthai.com/userfiles/files/16890693731.pdfIn PDF document text
    • http://charugarware.com/DEVELOPMENT/charu_garware/uploaded/userfiles/file/xupola.pdfIn PDF document text
    • https://vrindaindia.com/php/joseph/uploads/file/bokana.pdfIn PDF document text
    • http://www.sunarmisir.com.tr/wp-content/plugins/super-forms/uploads/php/files/5ihqau8dq46as4nivi2gr6gg22/zazagagasomubotanuji.pdfIn PDF document text
    • http://aec.dbodm.com/js/upload/ckfinder/files/94619019400.pdfIn PDF document text
    • https://actsonics.com/uploads/files/202111182227095606.pdfIn PDF document text
    • https://linkevicius.com/upload/galery/file/zitariganetoloxeruv.pdfIn PDF document text
    • http://cuanhuaabshanquoc.vn/files/pedomovuwevu.pdfIn PDF document text
    • http://studiotecnicodavico.eu/userfiles/files/78948649464.pdfIn PDF document text
    • http://techscreening.com/userfiles/files/jufig.pdfIn PDF document text
    • http://unitez.net/images/newtech/files/pavobavari.pdfIn PDF document text
    • http://alpha-th.com/userfiles/file/13725734063.pdfIn PDF document text
    • http://alvit-bk.ru/userfiles/file/jujukufu.pdfIn PDF document text
    • https://supportsurgical.com.br/assets/kcfinder/upload/files/jalebixuvakurexovomad.pdfIn PDF document text
    • http://svb-volleyball.de/userfiles/file/jekow.pdfIn PDF document text
    • http://zhongjiukeji.com/upload_fck/file/2021-9-21/20210921224402462030.pdfIn PDF document text
    • https://oriental-kitchens.com/userfiles/files/gudedesavemivojilam.pdfIn PDF document text
    • http://wakingbeauty.com/wp-content/plugins/formcraft/file-upload/server/content/files/161bb614904299---51192618893.pdfIn PDF document text
    • http://suliaok.com/v15/Upload/file/2021891741489649.pdfIn PDF document text
    • http://szkolaprzybranowo.pl/ckfinder/userfiles/files/84357746476.pdfIn PDF document text
    • https://voolabs.com/wp-content/plugins/formcraft/file-upload/server/content/files/161f1a527d2e51---sunetakefebasofaka.pdfIn PDF document text
    • https://study-go.info/wp-content/plugins/super-forms/uploads/php/files/32e8d221efa2ba6e0a92179938e7ef6d/feveferomepipuv.pdfIn PDF document text
    • http://aptekadc.pl/userfiles/userfile/17908883452.pdfIn PDF document text
    • http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131fc7766194---78176289953.pdfIn PDF document text
    • https://protum.se/file/repexutalejurogoboluk.pdfIn PDF document text
    • https://lovig.co.za/XSRYdR1H?utm_term=nice+guidelines+hiv+treatment+ukPDF link annotation
    • https://www.bmo-agencement.fr/ckfinder/userfiles/files/wokolujirizek.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_off0005b528.bin)
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn extracted file (font_00_sfnt_off0005b528.bin)

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0005b528.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B528 16560 bytes
SHA-256: 924ad5cb737cfd9a34472b2046831991df4d3950e5f0d7b552a18309318c2ee9
font_01_sfnt_off0005cc48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5CC48 10932 bytes
SHA-256: cb428b95d739d6fcf35e57a693c69d584d63a0046cd392aa8c0d825e4735df35
font_02_sfnt_off0005e536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E536 18260 bytes
SHA-256: d3ac0d0085bda0d8e088f17a63b9493456367e2703a08a6fd00977432db2e569