Malicious PDF — malware analysis report

Static analysis result for SHA-256 f3d1557a58f927d9…

MALICIOUS

PDF

43.9 KB Created: 2020-08-15 12:38:07 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 6023c7598bf9dcef6d80c40762026fe6 SHA-1: f9a8214cc07157a074edd09d22ec4149acf86056 SHA-256: f3d1557a58f927d9a7137272c4f0224c0f49215b5b5be87570a9f6964f094811
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF document contains a link to a known malicious redirector, ttraff.cc, disguised as a Widal test report. The document also exhibits characteristics of a link farm, with numerous embedded URLs pointing to external PDF files, likely to manipulate search engine results or distribute further malicious content. The primary malicious URL is https://ttraff.cc/pify?keyword=widal+test+positive+report+sample, which is the most critical IOC.

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.cc/pify?keyword=widal+test+positive+report+sample In PDF document text
    • http://files.learnguitar4fun.com/uploads/1/3/1/8/131856381/8522082.pdfIn PDF document text
    • http://lewumen.mackbrosgroundskeeping.org/uploads/1/3/0/7/130738943/mapusel.pdfIn PDF document text
    • http://bemig.mndefenderwear.com/uploads/1/3/1/4/131482823/niwafaf-soduwebuvib.pdfIn PDF document text
    • http://files.honeranch.com/uploads/1/3/1/4/131483719/wogebaf_posebigiro_bisigomotoju.pdfIn PDF document text
    • http://devuledu.museumofmastertapereels.org/uploads/1/3/0/7/130775118/e38505d1.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/1/0434/5276/0224/files/49233102195.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6623/7852/files/64695819209.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3379/5477/files/the_chronological_study_bible_new_king_james_version.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/7303/6697/files/saints_row_2_money_cheat_xbox_360.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4922/9220/files/foleduvetakejikizuge.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/5037/6100/files/wwf_hasbro_checklist.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/7302/7749/files/60596485521.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9394/0641/files/15244622850.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_off00006e38.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E38 5180 bytes
SHA-256: 7d7514c5ba988c869c456bfce388cda924e54fc1b493e00101c7d406600df428
font_01_sfnt_off00007fc7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7FC7 10424 bytes
SHA-256: 8778f48b20caf522e18a17c163cceb710cf4cc68362f00d8aee05c74966ce178

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