Malicious PDF — malware analysis report

Static analysis result for SHA-256 af2ab4856037e8f8…

MALICIOUS

PDF

61.0 KB Created: 2020-12-24 20:14:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-21
MD5: dc1fde60e71423ba90d3009e68965556 SHA-1: 262e9c43c6398f980bc30199d6554a984700d4bc SHA-256: af2ab4856037e8f8b6c2eb47e0a6cc442b8b8c73135a04f4e7d6633f974b0e39
274 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • 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://traffine.ru/wb?keyword=shooting%20in%20kingstree%20sc%20roses In PDF document text
    • https://tabuxeniki.weebly.com/uploads/1/3/2/6/132682737/d8a65c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391903/normal_5fa1536de733c.pdfIn PDF document text
    • https://larigagip.weebly.com/uploads/1/3/4/8/134887586/guzajegijadelorare.pdfIn PDF document text
    • https://xizodekez.weebly.com/uploads/1/3/4/7/134769153/4ad5b2.pdfIn PDF document text
    • https://lopodudox.weebly.com/uploads/1/3/4/3/134339354/fivapo_jinizafo.pdfIn PDF document text
    • https://jeponiruwapin.weebly.com/uploads/1/3/0/7/130776483/resimogapukizudel.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/1-100_answer_sheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0fc36cf1-cab4-4acd-ad0b-1efb03b7ff7a/groups_process_and_practice_10th_edi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c68fa7a8-dcf0-4421-9b97-dea85d99f40e/79089535584.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/libalavogozena.pdfIn PDF document text
    • https://s3.amazonaws.com/wizitifowubux/delitajelubifufumotawaros.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/759335e5-e1d5-47c0-9ef6-17c2d8a5c85b/16_personalities_infp_premium_profile.pdfIn PDF document text
    • https://s3.amazonaws.com/sowirutelevolur/kinejifuvudoraxe.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://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000b583.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB583 4988 bytes
SHA-256: f0543ef4deddf50c9ac797762e58d813e24cb67e11a18929265de0e49ed37da6
font_01_sfnt_off0000c67e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC67E 9608 bytes
SHA-256: e382265ad6b5460d235a5f5b07101240ccc403da9a63cc6ca406f983bc973495