Malicious PDF — malware analysis report

Static analysis result for SHA-256 67e3ab783659b671…

MALICIOUS

PDF

42.2 KB Created: 2020-08-12 02:44:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: a8a1cf5c3609128e2dfdb715db90da98 SHA-1: 7d8f33faafccb44c60f62f8876ea3f9246d63e65 SHA-256: 67e3ab783659b671e4a825a5559d1aea5b334f64a0205c2bc0d6745e278ebed5
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to a redirector service, suggesting a link farm or SEO poisoning tactic to drive traffic to potentially malicious sites. The primary redirector URL is https://ttraff.ru/pify?keyword=pdf+to+autocad+converter+free+download+software, which is flagged as malicious. The document body also contains this URL, reinforcing the lure for users seeking free software downloads.

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=pdf+to+autocad+converter+free+download+software In PDF document text
    • http://files.yogashak.com/uploads/1/3/0/9/130969910/zevuru.pdfIn PDF document text
    • http://budimovis.socialinnovationfredericton.com/uploads/1/3/1/4/131407406/3357428.pdfIn PDF document text
    • http://files.christinabethlehemphotography.com/uploads/1/3/1/6/131607889/motoj.pdfIn PDF document text
    • http://files.dunblanebowlingclub.org.uk/uploads/1/3/0/8/130874067/nudasajuvopubaripus.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/1/0432/2299/1007/files/52006270480.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/89462818099.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3425/5258/files/mupadogokepanuremofuva.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5649/5769/files/xeguposasewudefadeto.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6406/6209/files/89128254146.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/laxefasigapabaxirasu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/0118/2370/files/48566640894.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2352/4259/files/alexandre_dumas_livros.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/4995/8046/files/15102064796.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3082/3583/files/7232579208.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/0842/6147/files/wiwutubirajakunaw.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 8

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_off00006792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6792 5168 bytes
SHA-256: 691087a4d7798abba2d9238154cca3c9a2fc50419d84481cce757a2bad3e836f
font_01_sfnt_off00007944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7944 9948 bytes
SHA-256: 309b87f1f2a111a9653944a905779d5455526978463a127960395aadfaae3274

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