Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3eca7b8783c3015…

MALICIOUS

PDF

32.2 KB Created: 2020-08-30 22:14:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 77eafa19f211bd40672776bb6cf22799 SHA-1: b1725ffd993d30bd165da0e7ce4d238e8f56cf86 SHA-256: c3eca7b8783c301552c4683f315d3ea34c8f8b7effda62d63ac0be968c786b4f
120 Risk Score

Malware Insights

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

The PDF file contains a critical heuristic firing indicating it's a malicious redirector link. The document body, though heavily obfuscated, contains text that appears to be a lure for a "2003 dodge dakota owners manual". This lure is associated with a URL that is flagged as malicious, likely leading to further compromise. The PDF also contains a large number of external links, suggesting a link farm or redirection tactic.

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.cc/wix?keyword=2003+dodge+dakota+owners+manual
    • https://cdn.shopify.com/s/files/1/0430/7160/2855/files/twinkle_twinkle_little_star_violin.pdf
    • https://cdn.shopify.com/s/files/1/0432/8374/2873/files/structured_cabling_basics.pdf
    • https://cdn.shopify.com/s/files/1/0430/8697/1033/files/simple_battery_charger_circuit.pdf
    • https://static.usrfiles.com/ugd/b8c837_959b61ec5f3b49cfb7a88e3d73054a9f.pdf
    • https://static.usrfiles.com/ugd/ea78e0_a96fa95c1f0d4a008853015d5d409b25.pdf
    • https://static.usrfiles.com/ugd/3e5d97_bd1772bf5570431287a8effadb9fa3ab.pdf
    • https://static.usrfiles.com/ugd/74a852_6b57ab6efe0c42e2a406d2ddaeeca5a4.pdf
    • https://cdn.shopify.com/s/files/1/0430/1278/4277/files/15813610682.pdf
    • https://cdn.shopify.com/s/files/1/0429/8915/8554/files/75742643727.pdf
    • https://cdn.shopify.com/s/files/1/0462/4249/6663/files/descargar_happy_wheels_para_pc_gratis.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_off00003f20.bin
70942bb8611c65f6d552662820e0b51bfdadfe74c3d29b832dc3347ead5ea62b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3F20 5644 bytes
font_01_sfnt_off00005242.bin
06236af77ec31e3304908fb279c7c3cc4ba1f8e7c197de357bbdd5a325891b14		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5242 9948 bytes

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