Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a1e24791313608e…

MALICIOUS

PDF

308.6 KB Created: 2022-01-22 05:57:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-05-31
MD5: 81e13d4d95ea03acd0f02e49683e90e1 SHA-1: 1b825b1cf2b293fe418a91187b9ebe83800dd172 SHA-256: 5a1e24791313608e60fb43ff4dff539d043d1b6a62ba65e039c67c7782c8e7e6
174 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.7334

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.
  • Embedded JS stream low PDF_JS
    PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
  • 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://crewmak.ru/uplcv?utm_term=certified+mail+form+sheet PDF link annotation
    • http://xn--80aaa1acmiejxr6d7fg.xn--p1ai/data/files/23733009807.pdfIn PDF document text
    • http://ukonlinedirect.com/userfiles/files/mevepozusi.pdfIn PDF document text
    • http://tsraccountants.nl/mailing/images/photo/file/rojaxaperowo.pdfIn PDF document text
    • http://zussobrance.sk/grafika/dokumenty/89087288165.pdfIn PDF document text
    • http://hejia-ele.net/upload/75023709959.pdfIn PDF document text
    • https://afmc.edu.bd/public/files/assets/ckeditor/kcfinder/upload/files/70689286787.pdfIn PDF document text
    • http://chhattisgarhsanskritboard.in/sharpinstitute/images/files/dewij.pdfIn PDF document text
    • https://bakkerijkamstra.nl/userfiles/files/velofipexad.pdfIn PDF document text
    • http://be-now.pl/userfiles/file/91445950896.pdfIn PDF document text
    • http://chistogood.ru/admin/ckfinder/userfiles/files/33974977411.pdfIn PDF document text
    • https://www.travelknowhowscotland.co.uk/assets/js/ckfinder/userfiles/files/ronokuruzeduvefusexaza.pdfIn PDF document text
    • http://advantagesport.org/kcfinder/upload/files/bewabivutid.pdfIn PDF document text
    • http://odra.cycling-recycling.eu/imgturysta/files/80098625283.pdfIn PDF document text
    • https://webmanagement.exing.ro/images/file/sazuroxipelexaworizotus.pdfIn PDF document text
    • http://attilacenter.org/userfiles/file/94930746440.pdfIn PDF document text
    • http://adice-area.com/pictures/files/17540487945.pdfIn PDF document text
    • http://principessavencanice.com/wp-content/plugins/formcraft/file-upload/server/content/files/16169e396f0d35---74966413665.pdfIn PDF document text
    • https://dazzlin.co.uk/wp-content/plugins/super-forms/uploads/php/files/464d0fa8cad21727583d627cb0038a66/belinexubutuxaradawi.pdfIn PDF document text
    • https://infypos.com/infyposcms/media/19790077661.pdfIn PDF document text
    • https://realimpacto.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/161b1dc5bcc3c5---sogatipubekusazabozozu.pdfIn PDF document text
    • http://bancodevida.com/bancodevida/admin/images/image/file/14832834143.pdfIn PDF document text
    • https://tworaise.com/userfiles/file/wokus.pdfIn PDF document text
    • http://eortak.com/img/fck_temp/file/bexive.pdfIn PDF document text
    • http://sirindhorn.net/upload/File/telobiloxizedegelozo.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 PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000468dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x468DC 16892 bytes
SHA-256: 68520392c262e0e939074a0c4567d2e00c533fb1fc77515084257808e2ddaea8
font_01_sfnt_off00049506.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49506 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0004abaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4ABAA 10544 bytes
SHA-256: bee187076c3bf56fff7891a7157356833aa4171c2ddd05ec9cc011ea1ea94593