Malicious PDF — malware analysis report

Static analysis result for SHA-256 6b61a149afc5f176…

MALICIOUS

PDF

45.5 KB Created: 2020-08-15 04:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 395d56c69dc6ba59c5ce63cb795095e9 SHA-1: cda547df78ebb58de63fcaef40c5c3c5cfa27c91 SHA-256: 6b61a149afc5f17678dbe2ce3d52ff9855800ed59f5a622bd85c2a0edae8cd34
194 Risk Score

Malware Insights

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

This PDF document contains numerous links, many of which point to a redirector infrastructure associated with malicious activity. The document body, though heavily obfuscated, contains the URL "https://ttraff.cc/pify?keyword=choo+choo+song", which is also flagged by heuristics as a malicious redirector. The presence of a large number of external PDF links suggests a link farm or SEO manipulation tactic, likely to distribute malicious content or phish for information.

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=choo+choo+song In PDF document text
    • http://siwiwus.sacredheartsisters.org/uploads/1/3/0/8/130874049/78a276df84.pdfIn PDF document text
    • http://geralelem.kimstravelers.com/uploads/1/3/0/8/130814328/2930296.pdfIn PDF document text
    • http://files.bethuneandson.com/uploads/1/3/1/3/131397996/belinurekoj.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/1/0430/8179/3698/files/open_all_interiors.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8354/6267/files/banekizulanuledemokizad.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8351/3494/files/87248867500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/2534/0328/files/bokevamobuwokupiz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0453/6093/9163/files/71276033515.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/5413/5456/files/jump_the_shark_website.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2970/6390/files/edible_mushrooms_list.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/wimuwukewamofese.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/3415/5928/files/ratofuxuzoxivuj.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_off000076db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x76DB 4628 bytes
SHA-256: e4d0707e8c118d0cd72af4542cff970908263605bb3cdc99636fad87e5e9345f
font_01_sfnt_off00008698.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8698 10240 bytes
SHA-256: 2ba5ee3eb3702d744da470ca1a75bbc3de539916684567c19d5c6b801ebf7af7

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