Malicious PDF — malware analysis report

Static analysis result for SHA-256 898cbde2f7db2354…

MALICIOUS

PDF

40.1 KB Created: 2020-08-22 19:54:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 68ca8ae1b33bcaac23546875ee71411d SHA-1: e0127809734adb6334b18032c7255c307cfbd23f SHA-256: 898cbde2f7db2354329a32f56bc9a628a6a6ccf10ea25d781e1b020aa6fbd703
160 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, ttraff.com, which is likely used to obscure the final malicious destination. The document also features a large number of embedded links to Shopify-hosted PDFs, suggesting a link farm or SEO poisoning tactic. The presence of a 'Password-protected archive lure' heuristic indicates the document may be intended to trick the user into downloading a password-protected file, which is a common method to bypass security scanning.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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/pify?keyword=explosion+box+video
    • http://files.hushupclothing.com/uploads/1/3/1/8/131856391/mamulov.pdf
    • http://zomuwe.laurenandresurbanist.com/uploads/1/3/0/7/130775085/42f7f478.pdf
    • http://ligiw.bainbridge-ny-rotary.com/uploads/1/3/2/6/132683001/39ad4de6f084ea8.pdf
    • https://cdn.shopify.com/s/files/1/0430/5528/4373/files/vanijototerewax.pdf
    • https://cdn.shopify.com/s/files/1/0432/0978/5512/files/free_2011_nec.pdf
    • https://cdn.shopify.com/s/files/1/0437/5861/6733/files/pejusususujuzutepotula.pdf
    • https://cdn.shopify.com/s/files/1/0431/5178/6145/files/lullaby_lateeya_chords.pdf
    • https://cdn.shopify.com/s/files/1/0432/5628/3296/files/benefits_of_renewable_energy.pdf
    • https://cdn.shopify.com/s/files/1/0429/0406/0071/files/20829897000.pdf
    • https://cdn.shopify.com/s/files/1/0446/8441/1033/files/deltoid_bursitis_exercises.pdf
    • https://cdn.shopify.com/s/files/1/0433/9109/0844/files/61504286587.pdf
    • https://cdn.shopify.com/s/files/1/0432/9819/3566/files/90409163158.pdf
    • https://cdn.shopify.com/s/files/1/0432/1083/4077/files/how_to_mod_gta_5_xbox_360.pdf
    • https://cdn.shopify.com/s/files/1/0429/6641/7571/files/91961024967.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005f5e.bin
92fa9aa36fdde5467274980addef7f1c728b9ab0f2d434346ffc206d751d9c4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5E 4872 bytes
font_01_sfnt_off00007009.bin
7f7851f45c87d1dc9effbfbc3fe934f7a381660a782501b68f0856eb4ff78862		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7009 10620 bytes

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