Malicious PDF — malware analysis report

Static analysis result for SHA-256 85b4045d2f36c1e2…

MALICIOUS

PDF

43.1 KB Created: 2020-08-22 13:00:30 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: d13ea3fcdbf4d01b4621e40e6c052c38 SHA-1: 8eae0a43ffa8145fb9f0f04ffe32650da28d3a87 SHA-256: 85b4045d2f36c1e2f34239f0051b7b10dd715e510d184be03f5f913129bdd75c
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to a redirector service (ttraff.ru) which is flagged as malicious. The document body, though heavily obfuscated, contains the same redirector URL and benign-looking Shopify URLs, suggesting a link farm or SEO manipulation tactic to disguise malicious intent. The ML classifier strongly indicates maliciousness, and the overall structure points to a phishing or malware distribution lure.

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=atlantic+council+report+on+ukraine In PDF document text
    • http://wanopug.tmjempowers.com/uploads/1/3/1/4/131405927/2468609.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4742/6975/files/38328252275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7133/2767/files/wisusupebiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/3756/2779/files/lanuratev.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/7663/0181/files/31319359275.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5498/0505/files/gebosirexakigul.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/3204/9824/files/bootstrap_web_design_template.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/6562/0118/files/fuzugubebisazudu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/4028/5607/files/zikodijawepabediro.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/5243/2537/files/aptitude_formulas_for_interview.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3152/6557/files/pejuvabanawotuvixudetada.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 1

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

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D89 4684 bytes
SHA-256: 753f7faf38420e883062712150a0a810b0454b6f90e4edccb40720f37351990e
font_01_sfnt_off00006d75.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D75 10860 bytes
SHA-256: 3571da390fd40456523443130ae7be7ef05298cd547bdc2bbd3d7d1e27924fbd
font_02_sfnt_off0000918d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x918D 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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