Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a167d2340a81bef…

MALICIOUS

PDF

48.7 KB Created: 2020-08-11 12:56:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 6164b3e7dc40593532495c32db797de1 SHA-1: 2ab1f643c5ab99b2f5fdd61998fe58bc4e535bc4 SHA-256: 3a167d2340a81bef70f430364f16808f749b26d36a29d20fa340d955eab5b1d0
120 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a malicious redirector link, pointing to `https://ttraff.com/wb?keyword=capacity%20development%20framework%20pdf`. This URL is presented within the document body, disguised as a legitimate document title. The file also contains a large number of embedded links, many of which point to Shopify domains, but the primary malicious link is the redirector. The document body itself is heavily obfuscated and contains the malicious URL, suggesting a phishing or scam attempt.

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=capacity%20development%20framework%20pdf
    • http://nakuda.theidealcrew.com/uploads/1/3/0/7/130738732/061b3408827a9.pdf
    • http://files.moonlightairfoundation.org/uploads/1/3/1/3/131379567/c7506e54324e.pdf
    • http://files.bulutmak.net/uploads/1/3/1/4/131406885/sasofivi-fowazevozuwad.pdf
    • https://cdn.shopify.com/s/files/1/0431/7482/2043/files/71508218081.pdf
    • https://cdn.shopify.com/s/files/1/0431/9091/1137/files/how_to_install_windows_xp_on_virtualbox.pdf
    • https://cdn.shopify.com/s/files/1/0430/4742/0066/files/aprendizajes_clave_secundaria_socioemocional.pdf
    • https://cdn.shopify.com/s/files/1/0435/9605/4690/files/physics_solution_manuel.pdf
    • https://cdn.shopify.com/s/files/1/0432/1817/4107/files/automobilismo_d_epoca.pdf
    • https://cdn.shopify.com/s/files/1/0433/8787/9580/files/45805799837.pdf
    • https://cdn.shopify.com/s/files/1/0434/4836/9319/files/86819341581.pdf
    • https://cdn.shopify.com/s/files/1/0432/4327/4402/files/torividabonurozazipoxojes.pdf
    • https://cdn.shopify.com/s/files/1/0434/7202/7814/files/34961859502.pdf
    • https://cdn.shopify.com/s/files/1/0434/5479/1832/files/87134366432.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_off00008179.bin
ea56d0ec910d1beff436fdfb2a0771e3f113dd0bdd260e40aa848bde02ab5b3a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8179 5344 bytes
font_01_sfnt_off000093ab.bin
4b1158a6d6d49708ad57b3e28afc85d7f50ac7f692c9f4bb15808296adac5b4f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x93AB 10156 bytes

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