Malicious PDF — malware analysis report

Static analysis result for SHA-256 3afd74d08c10521d…

MALICIOUS

PDF

32.5 KB Created: 2020-08-13 09:07:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: ec62daed63843bfa018b9a8d0430f3b6 SHA-1: 0bb2d88c3a6fcccc88d35625c2607939948ceccf SHA-256: 3afd74d08c10521de677460a4d7c3e91eb23d803eeba980d10bdf2b3ef35d16e
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to `https://ttraff.ru/wb?keyword=ditting%20grinder%20kr1203%20parts%20manual`. This URL is likely used to redirect the user to a malicious site. The document body, though heavily obfuscated, contains references to the same URL and other Shopify-hosted PDF files, suggesting a link farm or SEO poisoning tactic. The ML classifier also strongly flagged this PDF as malicious.

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/wb?keyword=ditting%20grinder%20kr1203%20parts%20manual In PDF document text
    • http://files.petoskeydrones.com/uploads/1/3/0/8/130874655/zebuxofizosu_nozejozaw.pdfIn PDF document text
    • http://files.elizabethhrand.com/uploads/1/3/1/4/131406592/70f28bc48.pdfIn PDF document text
    • http://lozuz.basile-vareltzis.com/uploads/1/3/1/8/131857334/9508418.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/1/0435/3975/9259/files/17148589842.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2511/1972/files/89603820463.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5244/9444/files/80764585388.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/1028728638.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5090/1402/files/1104846252.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4158/5314/files/11260922165.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/0181/3915/files/95687304397.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7594/4091/files/84651781988.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8606/1480/files/magaduwuzeloferibifarema.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5540/6494/files/71439253098.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8642/0893/files/22932551447.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/1075/2663/files/zanemuk.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/8553/6159/files/powamosixipevesitas.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 5

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_off000041b4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x41B4 5832 bytes
SHA-256: b813d89a008f6528fda31d08124739d7d0029a2af5ed27418079ccb82bbed9b9
font_01_sfnt_off0000557a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x557A 9340 bytes
SHA-256: 7936c668b51861566ae740585674e4e7abcf85ab1537c228ef691b622362c831

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