Malicious PDF — malware analysis report

Static analysis result for SHA-256 3098662896159b09…

MALICIOUS

PDF

43.6 KB Created: 2020-08-24 20:42:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a8f1b80f7f49b0674be58e040df3b27f SHA-1: b3046dc419c8877c06f301bd26f5485e6886c88c SHA-256: 3098662896159b09122849bd5d069415861105b1dacbdfd8f5193d1644afc40f
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell T1204.002 Malicious Link

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 and references to 'barbie dressup and makeup games free', suggesting a lure. The PDF also exhibits characteristics of a link farm, with numerous external links, many hosted on 'cdn.shopify.com'. The primary malicious URL is 'https://ttraff.com/pify?keyword=barbie+dressup+and+makeup+games+free', which is likely used to redirect users to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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/pify?keyword=barbie+dressup+and+makeup+games+free
    • http://files.geo-mac.com/uploads/1/3/2/6/132681307/3696041.pdf
    • http://files.gypsyjacksfashions.net/uploads/1/3/0/7/130740323/4610986.pdf
    • http://files.bridgendcastleplayers.org/uploads/1/3/1/8/131858044/7234864.pdf
    • https://cdn.shopify.com/s/files/1/0430/1216/1685/files/personality_adjectives_test.pdf
    • https://cdn.shopify.com/s/files/1/0427/9002/7430/files/90606679690.pdf
    • https://cdn.shopify.com/s/files/1/0434/6760/4128/files/tikukifametovase.pdf
    • https://cdn.shopify.com/s/files/1/0431/7832/8221/files/68707918830.pdf
    • https://cdn.shopify.com/s/files/1/0437/4285/5319/files/caroline_myss_archetypes.pdf
    • https://cdn.shopify.com/s/files/1/0436/9793/0393/files/lands_end_school_uniforms_website.pdf
    • https://cdn.shopify.com/s/files/1/0432/6447/5304/files/picsart_editing_text_png.pdf
    • https://cdn.shopify.com/s/files/1/0437/8702/6590/files/16973857666.pdf
    • https://cdn.shopify.com/s/files/1/0440/8606/7352/files/36644593920.pdf
    • https://cdn.shopify.com/s/files/1/0435/5329/2440/files/roloseliburolopejino.pdf
    • https://cdn.shopify.com/s/files/1/0432/1381/5966/files/5031500862.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_off00005f2e.bin
6bec06801d9c3dbd11ab8ebff378c4737ddd11fc607531627374d9e7ca13da14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5F2E 5584 bytes
font_01_sfnt_off00007214.bin
71771dd6f9664b54c64158e865d5b473f275283a314a9b1d733045baa2b3d87b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7214 14708 bytes

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