Malicious PDF — malware analysis report

Static analysis result for SHA-256 9637fc52004a3fe4…

MALICIOUS

PDF

45.9 KB Created: 2020-08-15 21:35:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-08
MD5: 74da5626f1d5b60412057af582a24a16 SHA-1: 715779df2214759a3d8b75c82a19a47d0ef9f840 SHA-256: 9637fc52004a3fe4e80476150c0a5e9455389696e01be20063f1e3e671d6f542
194 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link, pointing to 'ttraff.com'. The document body, though heavily obfuscated, also contains this URL, suggesting it's the primary lure. The presence of numerous other links, many hosted on 'cdn.shopify.com', indicates a link farm strategy to improve search engine visibility for malicious content. No scripts were extracted, limiting the analysis of further payload delivery mechanisms.

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/wb?keyword=gases%20arteriales%20pdf%20pediatria In PDF document text
    • http://files.288sportsottawa.com/uploads/1/3/0/8/130814682/dugatazinarilik-bedagewisu-dogudesufeje-nirevolafe.pdfIn PDF document text
    • http://files.digistormers.com/uploads/1/3/1/0/131071256/gugozuvifalok.pdfIn PDF document text
    • http://files.martinadulted.com/uploads/1/3/0/7/130775200/babemabatigolu-filivawisada-dibibetinuzuvo.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/1/0434/5253/0845/files/90292314765.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/muvinuwodijumejibi.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/24374024618.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/62760229169.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/vadowunosufekezosilolosaz.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/biology_test_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/rukeredet.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/cbt_for_anxiety.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0439/1570/6523/files/electronics_and_telecommunication_engineering_interview_questions_and_answers.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/waxutugutapunudepituv.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/banderas_de_mexico.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005d91.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D91 5064 bytes
SHA-256: 600ff854d462cdce13e34465e131c78aaa95891da1861a21464091b15eac9979
font_01_sfnt_off00006edf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EDF 11120 bytes
SHA-256: aa86d73885228fa942fb51f2264314d2cea0a17d88f5ee1c7b7b6919dbfda7fb
font_02_sfnt_off00009377.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9377 16128 bytes
SHA-256: c6d15a48544a3bb55b86c8e7bdd0e7cb70a7a2427dd0dd016b970b4b8641d415