Malicious PDF — malware analysis report

Static analysis result for SHA-256 82bba125c84efc66…

MALICIOUS

PDF

39.3 KB Created: 2020-08-22 11:02:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: e01d03f55090219b5f009f94a07b900c SHA-1: 6b7999eb6ebee79a4d5915ce2fdd195632be42dd SHA-256: 82bba125c84efc66cce465e8a6fd04dffb8822cb974d8eff0cebcbad8bd39464
194 Risk Score

Malware Insights

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

The PDF contains numerous links, many pointing to SEO-optimized PDF files hosted on Shopify, likely as part of a link farm. A critical heuristic identified a redirector link to 'ttraff.ru' which is known malicious infrastructure. The document body, though heavily obfuscated, contains the same redirector URL and several other PDF links, suggesting a phishing or scam attempt disguised as academic content.

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=static+and+kinetic+friction+lab+analysis+answers In PDF document text
    • http://xigabi.uintahonline.com/uploads/1/3/1/6/131606289/bileg.pdfIn PDF document text
    • http://files.one9apparel.com/uploads/1/3/1/4/131438567/6953505.pdfIn PDF document text
    • http://files.absolutepartydjs.com/uploads/1/3/0/8/130874394/4c5a51f48b20.pdfIn PDF document text
    • http://files.philiprodrigues.com/uploads/1/3/1/8/131856352/6875076.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/1/0434/8837/9032/files/rabolupogijowejo.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7082/5382/files/beat_it_up_remix.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/6970/2306/files/86635433817.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/4066/7810/files/vaxubisokenabozuzivafalu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/67257536452.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6859/6117/files/91362811258.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/3638/5175/files/bully_dog_bdx_owners_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/0642/6275/files/vuzewubuvide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/0789/3919/files/77432511705.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 6

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_off00005acd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ACD 5516 bytes
SHA-256: 9f3ae9fe227be2c5c6bd8aac198a4f04ed0248dc3222d44e42d462bdaaf26544
font_01_sfnt_off00006da0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DA0 10184 bytes
SHA-256: 43e3fa8a7e0e671b97b9ba5a96916d4d83b47cd0b0692caa151e955dcd77bc52

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