Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c0fd8313a12c9cf…

MALICIOUS

PDF

37.6 KB Created: 2020-08-17 07:29:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a95232623e284d4acbe90082dabe3518 SHA-1: 4a14b43dc95a5fef3e4e4247a26a426bda8429cf SHA-256: 4c0fd8313a12c9cf6ef21294fc1aac522bc811c94062c506f3541a7076d759f7
150 Risk Score

Malware Insights

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

The PDF contains numerous embedded links, with a critical heuristic identifying a link to a known malicious redirector at 'https://ttraff.com/pify?keyword=bolt+dog+movie+free'. The document body, though heavily obfuscated, also contains this URL and other Shopify links, suggesting a link farm or redirection scheme. The ML classifier strongly indicates maliciousness, supporting the attack pattern of luring users to malicious infrastructure.

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=bolt+dog+movie+free
    • http://files.clallamdemocrats.org/uploads/1/3/0/7/130776516/fezodeneda.pdf
    • https://cdn.shopify.com/s/files/1/0434/3057/6285/files/security_guard_services_company_profile.pdf
    • https://cdn.shopify.com/s/files/1/0430/3536/1442/files/kilejibivuwojumawotule.pdf
    • https://cdn.shopify.com/s/files/1/0436/9917/5579/files/30858360448.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/79086372433.pdf
    • https://cdn.shopify.com/s/files/1/0434/3260/7894/files/xubiji.pdf
    • https://cdn.shopify.com/s/files/1/0428/5480/9756/files/tulumamufetaw.pdf
    • https://cdn.shopify.com/s/files/1/0430/2009/1555/files/alimentacin_sana_equilibrada.pdf
    • https://cdn.shopify.com/s/files/1/0435/3042/0384/files/rukegidepumuzukaxadugod.pdf
    • https://cdn.shopify.com/s/files/1/0438/8922/9979/files/59981297266.pdf
    • https://cdn.shopify.com/s/files/1/0429/3797/4950/files/xetirageruzisosafito.pdf
    • https://cdn.shopify.com/s/files/1/0448/1007/6322/files/wow_bfa_enchanting_leveling_guide.pdf
    • https://cdn.shopify.com/s/files/1/0429/2398/3001/files/kitofifelidulubigoxamu.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_off00004899.bin
81c96b4b9e96ce68f7af1dbd6110a321cdd0eeff63b46234e0e1a424dac5ec2f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4899 4632 bytes
font_01_sfnt_off00005865.bin
06116c29e44f3070ff47b0323ad0d53810830b2e446b2bdaba1248fefea22e57		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5865 10300 bytes
font_02_sfnt_off00007b88.bin
a542ec26cea93e049a2e27cd59b1347dd9bbdea13775fd7b822b3c2b3136116f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7B88 4324 bytes

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