Malicious PDF — malware analysis report

Static analysis result for SHA-256 664a795e9511ec22…

MALICIOUS

PDF

40.3 KB Created: 2020-08-04 10:28:13 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a0692147c1eaa0700eb13af506b05fa6 SHA-1: 35644b3ec2ed0bd05369e8d425102294ddd4344d SHA-256: 664a795e9511ec22dc905a15498e6eebbad4f4503f5bdf79a62d48f5544ffc4f
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document utilizes a link farm and SEO redirector to lure victims into downloading further malicious content, masquerading as a free book. The embedded URL `https://ttraff.ru/pify?keyword=anatomy+of+heart+pdf+book` is identified as a malicious redirector, and the document contains numerous links to other PDFs hosted on Shopify, likely part of a larger distribution network. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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://ttraff.ru/pify?keyword=anatomy+of+heart+pdf+book In PDF document text
    • http://files.cemmethod.net/uploads/1/3/2/6/132696249/niwipun.pdfIn PDF document text
    • http://files.fentonbehavioralhealthservices.com/uploads/1/3/0/9/130969888/ramujuwegiguzajeji.pdfIn PDF document text
    • http://files.fscmadison.org/uploads/1/3/1/4/131438456/sivunes_ziwaxigodopi_fazejusa_nivaramoperadeg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/muzoguganava.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/1358/5566/files/xibasurakekufexadol.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3032/2084/files/6073429283.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/2990/5058/files/gaxukexekusoge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3490/1660/files/88343772341.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0767/1447/files/42813342403.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7819/6129/files/30580900778.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/5864/1573/files/kabubarapilem.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9848/1564/files/33554589752.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/3799/8754/files/nefovojawajaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4950/8246/files/ziwigedipoxovekesogex.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

Related samples 2

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000601b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x601B 5368 bytes
SHA-256: d06cd7d664eccf4891c507966efdc946ea30a04e00d7f2823a1edb17c4fc7a85
font_01_sfnt_off00007239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7239 10092 bytes
SHA-256: 58ca62d6fac07257781870c77431687ff4cac8bcdbf07998c759f7e110969ef6

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