Malicious PDF — malware analysis report

Static analysis result for SHA-256 172694af487fc87a…

MALICIOUS

PDF

32.6 KB Created: 2020-08-12 08:02:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d324d9266f0238a0c6491ffa58e1296b SHA-1: 7d180df28cec1a2dfaf95059dde02a4f8c8e04ba SHA-256: 172694af487fc87a89e954a3b0a4396f01fb84cb0aaa5e606537b0f5a010fd74
194 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.ru, which is part of an SEO link farm designed to phish users. The document body, though heavily obfuscated, contains references to the malicious URL and numerous other PDF links, many hosted on Shopify, likely as part of the link farm. The ML classifier also strongly indicated maliciousness.

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=clinical+chemistry+2+bishop+pdf In PDF document text
    • http://files.fbcfnh.com/uploads/1/3/2/6/132681304/9237211.pdfIn PDF document text
    • http://gaxen.justsaybeadz.com/uploads/1/3/1/3/131384721/4559760.pdfIn PDF document text
    • http://files.eastcoastdancenj.com/uploads/1/3/2/6/132696330/5c09170a4.pdfIn PDF document text
    • http://files.orilingo.com/uploads/1/3/1/8/131871721/pimujosabimuxi.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/1/0434/4214/3397/files/tepiwekereferajotofowud.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3628/6877/files/najabepo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/7097/9237/files/lezikaxuworap.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1190/7488/files/automorphism_in_group_theory.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/48054684450.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9835/8432/files/75130531250.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/5742/2229/files/dufaxanizax.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/4568/2328/files/jidifikonajutotozorapatop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6686/5302/files/ranumapet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/9296/7581/files/neither_nor_either_or.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6634/1029/files/27711758579.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/8090/8954/files/30251280586.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 4

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_off000042fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x42FE 5676 bytes
SHA-256: 1e8eaff3d19b5070adcee5373d56600b41d7ae75c594bf34037cd4ec4f98ce3f
font_01_sfnt_off00005606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5606 9180 bytes
SHA-256: 372d9761e05de36a175ff433a1c0f697c16716fc94e6369f41ed7c42a48083b6

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