Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2a83b1d0ebf536…

MALICIOUS

PDF

382.3 KB Created: 2021-12-28 09:43:17 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2026-06-21
MD5: 4b025689cdb012d214f2de37e7e9fd86 SHA-1: 25824b537704f05e1f79c98e2f19bdd554cf0503 SHA-256: af2a83b1d0ebf536362233e590d1a34cf3c7d26e7c706b0d0b5cdb8d161200be
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.6841

Heuristics 6

  • 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.
  • 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://jezirka-biobazeny.cz/UserFiles/File/64365427874.pdf In PDF document text
    • https://xn--90aoja6ahg5ds.xn--p1ai/uploads/files/jadizibojebizati.pdfIn PDF document text
    • https://edenestates.com/ckfinder/userfiles/files/48015071045.pdfIn PDF document text
    • http://nhatrangpalace.vn/app/webroot/upload/files/39671774507.pdfIn PDF document text
    • http://dirpub.org/editor/ckfinder/userfiles/files/mukodaxejevuruw.pdfIn PDF document text
    • https://centralnanaimo.gocascadia.com/images/cms/file/disufadupobu.pdfIn PDF document text
    • http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/161aa4136b334b---metemuzega.pdfIn PDF document text
    • http://jeanthompson.nl/ckfinder/userfiles/files/pedidozuvaw.pdfIn PDF document text
    • http://veterinariogiardinelli.it/userfiles/files/59006605511.pdfIn PDF document text
    • https://chaletvenay.skidnapping.com/uploadfiles/files/33834224646.pdfIn PDF document text
    • http://ayurveda-shiatsu-qigong-nice.com/upload/files/kaxejepizavavolodariwedit.pdfIn PDF document text
    • https://mkting.com.co/wp-content/plugins/super-forms/uploads/php/files/2bc3e0bfab45cd787b35a309ba3b11ab/18745370849.pdfIn PDF document text
    • http://matchedtubes.de/userfiles/file/tukokejeduvivinofepone.pdfIn PDF document text
    • http://inciboya.com/resimler/site/files/sakinoduxadetopi.pdfIn PDF document text
    • http://www.rec39.ru/wp-content/plugins/super-forms/uploads/php/files/0abfb97ae99fafd7d80f0d581fe4cdaf/logibon.pdfIn PDF document text
    • http://aylincinarli.com/fckfiles/file/47926575080.pdfIn PDF document text
    • https://ost-fogging.com/upload/files/rigigajisomumam.pdfIn PDF document text
    • http://purplebyanki-com.bvirani.com/ckfinder/userfiles/files/77306953770.pdfIn PDF document text
    • https://xn--64-mlcufjjaii0l.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/f6ecabde21c257c19f8c19bf90179c8f/fojogimeje.pdfIn PDF document text
    • https://total-sport.pl/img/upload/files/60521579063.pdfIn PDF document text
    • https://adasms.fr/userfiles/file/nukebabokunamiragagiti.pdfIn PDF document text
    • http://guide-eq.com/userfiles/file/20210924181430_m0gmws.pdfIn PDF document text
    • https://menuiserie-sainte-anne.fr/userfiles/file/53308973693.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Gsjc/~3/896FEnmJZlk/uplcv?utm_term=roland+barthes+image+music+text+pdfPDF link annotation
    • 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_off0005809a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5809A 11456 bytes
SHA-256: c7268c84deac2fecf0d6eba16ee1df30f6ab4ce6847890aa8372238b8def036d
font_01_sfnt_off00059b18.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59B18 16416 bytes
SHA-256: cfa2c3fbce80cc5607e01af033b793d17c57c214fb1d96e845eedea48cccd336
font_02_sfnt_off0005b1b7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1B7 21724 bytes
SHA-256: 4aca76669d4f181d89f0ab35bedb91d547e7bf1cb12b1b5506515967531a0703