Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d265ddbeb96abf2…

MALICIOUS

PDF

41.0 KB Created: 2020-08-29 13:54:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 90e216aacd4751878449e5dbc6e58067 SHA-1: e72893c326f869a20ad1bb70f1719b06b87fd6e8 SHA-256: 8d265ddbeb96abf2226124e9b83f09893f30152640fbd89ee0a562afb2ba2394
120 Risk Score

Malware Insights

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

The PDF file contains a mass of external links, many pointing to static.usrfiles.com, but one critical link directs to a known malicious redirector at ttraff.cc. The document body, though heavily obfuscated, contains the keyword-rich phrase 'Whisper guide power plus trolling motor' and the malicious URL, suggesting a lure to a phishing or malware distribution site. The presence of numerous PDF links and a malicious redirector indicates a likely attempt to drive traffic to a harmful destination.

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=whisper+guide+power+plus+trolling+motor
    • https://static.usrfiles.com/ugd/10e3af_5514e65991a74e3cb3b2c59f421fa9be.pdf
    • https://static.usrfiles.com/ugd/cc10e7_10d58be1307e4b3bb0b4e96379a36919.pdf
    • https://static.usrfiles.com/ugd/2f8cea_dd529f95c14f41c2b1554deed67d3a18.pdf
    • https://static.usrfiles.com/ugd/b8c837_0a016298cd264e08830d91a2ceb502ad.pdf
    • https://static.usrfiles.com/ugd/b8c837_66d89211ace54cf2a4bfab0e80454bf0.pdf
    • https://static.usrfiles.com/ugd/158fb9_8cf5338d53bc42cfafad274a8aebeeb1.pdf
    • https://static.usrfiles.com/ugd/b8c837_97475afa840e4ea294ac917e8e89c985.pdf
    • https://static.usrfiles.com/ugd/b8c837_21b5a5a532714f12850f8b1957d32f77.pdf
    • https://cdn.shopify.com/s/files/1/0441/3207/3624/files/kekujifejefitixopa.pdf
    • https://cdn.shopify.com/s/files/1/0430/7678/0192/files/21960236141.pdf
    • https://cdn.shopify.com/s/files/1/0437/1369/1799/files/auto_tune_pro_full_crack.pdf
    • https://cdn.shopify.com/s/files/1/0429/8945/3473/files/vonukuxujazifiba.pdf
    • https://cdn.shopify.com/s/files/1/0434/9722/6402/files/65544694134.pdf
    • https://static.usrfiles.com/ugd/b8c837_3dd0371af56e42128cb15d9a4eb90424.pdf
    • https://static.usrfiles.com/ugd/b8c837_d6d57d5762ee48f79593b888510bdd04.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_off00005e3d.bin
ad68088b7ffd6214fc7dfeca543f4a6446fbbacce7dbc618a0ff4e117acfc3ba		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5E3D 5268 bytes
font_01_sfnt_off00007013.bin
f4288d3132972c4715868adb29b699d549a9c1f01babebdd182fd18fa2e57a74		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7013 11784 bytes

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