Malicious PDF — malware analysis report

Static analysis result for SHA-256 05fa8ba990259bce…

MALICIOUS

PDF

35.1 KB Created: 2020-08-18 19:40:24 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 3252ef84441d2f460d384dfa499b11d9 SHA-1: 0ba8cdc67a1062b0857f2a4163621bb5a2691c61 SHA-256: 05fa8ba990259bce4d18807165bceddedddb80d1a9b8dddb4f47bbbc80043a86
194 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, many pointing to what appears to be a link farm designed to obscure the ultimate destination. One critical heuristic identified a link to a known malicious redirector infrastructure at 'https://ttraff.com/pify?keyword=biochemistry+test+review+answers'. The document body also contains this URL and other Shopify links, suggesting a lure for users to download or review content, which is a common phishing or malware distribution tactic. The ML classifier strongly flagged this PDF as malicious.

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.com/pify?keyword=biochemistry+test+review+answers In PDF document text
    • http://files.progressiveair.org/uploads/1/3/2/6/132681536/niwoluwumige-wosixoma-nanopimew-zijapopi.pdfIn PDF document text
    • http://files.artbyhansgeist.com/uploads/1/3/1/4/131437984/jakedanonowejiti.pdfIn PDF document text
    • http://files.johnrichardsonimages.com/uploads/1/3/0/7/130776592/3522716.pdfIn PDF document text
    • http://giresigi.theramblingrebels.com/uploads/1/3/1/3/131383613/fafonixezuxixipiga.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/1/0434/7101/2006/files/pgyer_movie_box.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/2476/9436/files/90481786537.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1782/1605/files/82513519412.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5035/2296/files/n_attristez_pas_le_saint_esprit.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9743/8875/files/miretop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/2286/7880/files/34981724941.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/7799/9519/files/kobesolinezed.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/7141/5196/files/31347474212.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/7118/4794/files/lunopolin.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0918/5688/files/liquid_waste_management_lecture_notes.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/5537/3720/files/93626728625.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/4519/9777/files/94860752422.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_off00004c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4C72 5308 bytes
SHA-256: 958e175850857c31d9a38351ae62c4d6a6def708f0d611cb75826a752e98149c
font_01_sfnt_off00005e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6C 9724 bytes
SHA-256: f34abe03c223dd7c112be2d1e23b6cf56285ef8e3d4cdec555a957a38ff307f6

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