Malicious PDF — malware analysis report

Static analysis result for SHA-256 801373ed925c44c0…

MALICIOUS

PDF

36.0 KB Created: 2020-08-14 18:27:20 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6c85f5029e613318c324255251266195 SHA-1: c5ca9009f2398a96572d829c4df2c66e4fd34016 SHA-256: 801373ed925c44c04fd14e393168516814b137ae00886d0abb457bc48a767c3f
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 text related to a crossword answer and the malicious URL, suggesting a lure. The presence of a large number of external PDF links, many hosted on Shopify, indicates a link farm designed to drive traffic to the malicious redirector. No scripts were extracted, but the PDF structure and embedded links strongly suggest a phishing or scam attempt.

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=wound+up+crossword+answer In PDF document text
    • http://files.pajaritocaninesar.org/uploads/1/3/1/8/131856743/verakujudemaw.pdfIn PDF document text
    • http://files.katyitter.com/uploads/1/3/1/4/131438313/relotufimowemuf.pdfIn PDF document text
    • http://files.twistedoaksflemishgiants.com/uploads/1/3/2/6/132681207/fuwalo.pdfIn PDF document text
    • http://files.veronicawolfeartist.com/uploads/1/3/2/6/132695445/a03a69820.pdfIn PDF document text
    • http://files.stroseperry.com/uploads/1/3/1/4/131406258/9e3eda6e.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/1/0430/0413/3525/files/94846178982.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/2732/3301/files/vaguvotizine.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9456/5271/files/36897659134.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/9664/6556/files/42888191210.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/4555/2277/files/aprender_ingles_rpido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/3633/6551/files/sijaxozilomu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8321/9619/files/96224299404.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/16494210232.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_off00004f48.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4F48 5140 bytes
SHA-256: 8813e92deb0de64ea20a93ed176950c7b226a29435b01e47ede1b1991471ddb1
font_01_sfnt_off000060e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60E3 10248 bytes
SHA-256: 8c4b3001a85cb9d717928f60fd3ed525dca21f3968f22da07b6e9c1920435644

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