Malicious PDF — malware analysis report

Static analysis result for SHA-256 75dc49ef0644ad1a…

MALICIOUS

PDF

35.4 KB Created: 2020-08-13 22:30:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: 9b4854b8f39944c9940fb2883f5cde68 SHA-1: c49493050ec5e3b3e1fabb0d4b2c7c90b3595450 SHA-256: 75dc49ef0644ad1a93eb22ce2c535412ad6272acb3ce47a97bc6c76e3937ae50
194 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains numerous links, many of which point to a redirector service (ttraff.cc) that is flagged as malicious. The document body and embedded links suggest a lure for free music sheets, which is a common tactic for phishing or malware distribution. The presence of a link farm and redirector indicates an attempt to obscure the final malicious destination and potentially engage in SEO poisoning to attract victims.

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=baritone+horn+music+sheets+free In PDF document text
    • http://zefevawa.filamenthome.com/uploads/1/3/1/4/131406893/217e14681.pdfIn PDF document text
    • http://dapavagu.st-christophers-nh.org/uploads/1/3/1/6/131637814/718504.pdfIn PDF document text
    • http://files.moorehs1984.net/uploads/1/3/2/6/132681507/suwasetis.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/1/0432/5657/8212/files/san_luis_pass_fishing_reports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4842/6910/files/65508764947.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/8580/7269/files/76043814962.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/3005/2005/files/67558188500.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/6503/3383/files/work_breakdown_structure_sample.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2426/6917/files/msrtc_advertisement.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/3957/2643/files/wesomugudinezibewetel.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0427/6636/8935/files/camino_de_santiago_frances_eroski.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0660/7012/files/23881968438.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/8937/9993/files/dinoxe.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/3137/8590/files/46581750088.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1642/7419/files/fabal.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/0336/2975/files/omr_answer_sheet_200_questions.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 3

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_off00004db6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4DB6 5136 bytes
SHA-256: bddd5cfbccfa593e713301fdd64b1c3bf202f1698c2e04373b580b4995e34110
font_01_sfnt_off00005f01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F01 9848 bytes
SHA-256: c19733c28bf9070ce4e60814e27e8b622838648ae9db2a7050b70169fcea07d7

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