Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd12605922b7da3…

MALICIOUS

PDF

76.9 KB Created: 2020-12-08 23:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 04e932e51a30983fdab3594b1dc7a893 SHA-1: 307760770784d6e6504aaa80b2f6a8c2184cde3e SHA-256: 3dd12605922b7da3faf5c2ced1ab6586d4735f59395b0f84d8f88a826d2d4b7e
254 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • 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://traffmen.ru/strik?utm_term=hogs+breath+web+cam In PDF document text
    • https://cdn-cms.f-static.net/uploads/4393035/normal_5f93fa3b642d2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412999/normal_5fa583a8087cb.pdfIn PDF document text
    • https://lenukomezol.weebly.com/uploads/1/3/4/3/134311572/pazegu_potov.pdfIn PDF document text
    • https://welavofewefose.weebly.com/uploads/1/3/0/8/130813025/1130783.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4383800/normal_5fc6db564b60b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368752/normal_5f9d525f38e09.pdfIn PDF document text
    • https://babipuwoze.weebly.com/uploads/1/3/4/8/134865032/292961.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/netinuwa/gisotenijudejesusinifux.pdfIn PDF document text
    • https://s3.amazonaws.com/xapijifas/lease_agreement_template_california_free.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/amazon_prime_video_android_tv_4k.pdfIn PDF document text
    • https://s3.amazonaws.com/rupatojuko/duruzoje.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/fisopefutaroj.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/pusijowegowujemoleku.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c5c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC5C8 13032 bytes
SHA-256: 0ec9ba678bc47d1a92362f6727afc248b1f5ca8d6179a97761b68405fc20a41f
font_01_sfnt_off0000ee0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE0E 5372 bytes
SHA-256: 245344f9efac4fedf21170294b4a227758742614096e2ca15637cce59539503f
font_02_sfnt_off00010043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10043 11380 bytes
SHA-256: 9c7f134bc6d10467ada36d87407696637c22c73db4de71c8a20d789e5b9e1d6e

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