Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb69733396e0bb59…

MALICIOUS

PDF

41.4 KB Created: 2020-08-02 11:51:10 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 755f21d96913289e5e6e61f36728372e SHA-1: bdd853524c578c16ef08aac3e931691d6b18c671 SHA-256: bb69733396e0bb59ffdda98eaaec31843a0d22833bd983ef1d53433866bbb334
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links, many of which point to external resources. One critical heuristic identified a link to a known malicious redirector, 'ttraff.com', which is used in conjunction with the lure 'nhl 17 manual'. The document body, though heavily obfuscated, also contains this URL and other links, suggesting a link farm or redirection strategy. The presence of numerous PDF links further supports the idea of a link farm designed to distribute malicious content or lead users to phishing sites.

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=nhl+17+manual
    • http://files.americanfoursquare.us/uploads/1/3/2/7/132740218/majibomavapakabopi.pdf
    • http://files.coalesceconsultants.com/uploads/1/3/1/3/131384552/71458430e3e88c4.pdf
    • http://files.cheekyteach.com/uploads/1/3/2/6/132695575/bijapujewonisuxurese.pdf
    • http://files.strichardschichester.co.uk/uploads/1/3/1/1/131164033/7622363.pdf
    • https://cdn.shopify.com/s/files/1/0428/1604/5222/files/tifuvijoreliwerovapipiti.pdf
    • https://cdn.shopify.com/s/files/1/0430/4293/0842/files/86151747182.pdf
    • https://cdn.shopify.com/s/files/1/0438/3031/3122/files/pofopuxakejiwoj.pdf
    • https://cdn.shopify.com/s/files/1/0437/2201/4870/files/sifebitesixepin.pdf
    • https://cdn.shopify.com/s/files/1/0437/8433/9613/files/mobilixozeza.pdf
    • https://cdn.shopify.com/s/files/1/0430/6288/6554/files/52521894404.pdf
    • https://cdn.shopify.com/s/files/1/0431/2078/7613/files/17124644294.pdf
    • https://cdn.shopify.com/s/files/1/0433/0687/7080/files/fupibi.pdf
    • https://cdn.shopify.com/s/files/1/0430/2523/6121/files/9713427839.pdf
    • https://cdn.shopify.com/s/files/1/0437/4285/5319/files/gikod.pdf
    • https://cdn.shopify.com/s/files/1/0428/3016/8230/files/30210178824.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_off000066b9.bin
37ae77bd04d4184b74c5e301a22846b44c7291f4050e9b3c9cf8259ff38946ae		 pdf-font-stream PDF embedded font (sfnt) at offset 0x66B9 4752 bytes
font_01_sfnt_off000076c8.bin
eafdfeb169b283b8d49137175a03d331a56dced201a1970d123305c254f14664		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76C8 10052 bytes

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