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)
MD5: 74da5626f1d5b60412057af582a24a16 SHA-1: 715779df2214759a3d8b75c82a19a47d0ef9f840 SHA-256: 9637fc52004a3fe4e80476150c0a5e9455389696e01be20063f1e3e671d6f542
120 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.

Heuristics 3

  • 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.
  • 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
    • http://files.288sportsottawa.com/uploads/1/3/0/8/130814682/dugatazinarilik-bedagewisu-dogudesufeje-nirevolafe.pdf
    • http://files.digistormers.com/uploads/1/3/1/0/131071256/gugozuvifalok.pdf
    • http://files.martinadulted.com/uploads/1/3/0/7/130775200/babemabatigolu-filivawisada-dibibetinuzuvo.pdf
    • https://cdn.shopify.com/s/files/1/0434/5253/0845/files/90292314765.pdf
    • https://cdn.shopify.com/s/files/1/0429/9885/7891/files/muvinuwodijumejibi.pdf
    • https://cdn.shopify.com/s/files/1/0437/5497/9477/files/24374024618.pdf
    • https://cdn.shopify.com/s/files/1/0431/1705/2066/files/62760229169.pdf
    • https://cdn.shopify.com/s/files/1/0436/0349/3022/files/vadowunosufekezosilolosaz.pdf
    • https://cdn.shopify.com/s/files/1/0440/2338/2166/files/biology_test_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0434/9437/5576/files/rukeredet.pdf
    • https://cdn.shopify.com/s/files/1/0439/0486/0328/files/cbt_for_anxiety.pdf
    • https://cdn.shopify.com/s/files/1/0439/1570/6523/files/electronics_and_telecommunication_engineering_interview_questions_and_answers.pdf
    • https://cdn.shopify.com/s/files/1/0428/9203/4211/files/waxutugutapunudepituv.pdf
    • https://cdn.shopify.com/s/files/1/0435/1868/9434/files/banderas_de_mexico.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 3

Files carved from inside the sample during analysis.

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