Malicious PDF — malware analysis report

Static analysis result for SHA-256 fa3cb03c468cbf45…

MALICIOUS

PDF

41.1 KB Created: 2020-08-25 00:00:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 69bd5f81e2209010bde17a82b9f8ca3c SHA-1: 8e21a6e4a23b94119cef2fec24df7432524dbaf3 SHA-256: fa3cb03c468cbf457891a6fc2d38b1d8fb3b383a5986adb4c9447cb14dc5c81c
120 Risk Score

Malware Insights

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

The PDF contains a heuristic firing for a malicious redirector link pointing to 'ttraff.com'. It also exhibits characteristics of a link farm, with numerous embedded URLs, many of which are hosted on Shopify. The primary malicious URL is 'https://ttraff.com/pify?keyword=choir+sheet+music+satb', which likely serves as a lure to download further malicious content.

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=choir+sheet+music+satb
    • http://wepusegi.sp-arms.com/uploads/1/3/1/4/131453718/jefojowatinizi_vojifizas_zizawofelilebad.pdf
    • https://cdn.shopify.com/s/files/1/0464/6495/8616/files/xezopij.pdf
    • https://cdn.shopify.com/s/files/1/0445/3974/0319/files/biochemistry_lehninger_free.pdf
    • https://cdn.shopify.com/s/files/1/0427/4782/2236/files/camino_de_santiago_frances_en_bici.pdf
    • https://cdn.shopify.com/s/files/1/0434/4738/6262/files/miguporuva.pdf
    • https://cdn.shopify.com/s/files/1/0440/5837/8392/files/barbie_girl_kelly_key.pdf
    • https://cdn.shopify.com/s/files/1/0432/4301/2256/files/50766082390.pdf
    • https://cdn.shopify.com/s/files/1/0428/9314/8313/files/gedevi.pdf
    • https://cdn.shopify.com/s/files/1/0434/3883/3816/files/jabokerinodopitap.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_off00006359.bin
9ae1ee3b4dead8812914cc3bc4ba3a185c8b8997b1da33a3e0b18ed91bf7532f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6359 5052 bytes
font_01_sfnt_off0000745f.bin
3a350bfead1e03ed7993d55a52401100f768c19958b0dcaec728294108d79ee3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x745F 10468 bytes

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