Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1dd9506bd7109c6…

MALICIOUS

PDF

43.5 KB Created: 2020-09-08 01:41:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 71a4d4ec35e8f41b68ed616e6572095c SHA-1: 42abf8398b1892862a49afe74511e554c15a23e7 SHA-256: c1dd9506bd7109c6dc113080a027cdf26b20b1f95710bce91a0b534a770e238c
120 Risk Score

Malware Insights

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

The PDF file contains a link that redirects to a known malicious domain, masquerading as a free software download. The document body and heuristics indicate a lure to trick users into clicking the malicious link. The presence of a link farm suggests an attempt to improve search engine ranking for 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.me/wix?keyword=free++adobe+reader+9+english+version
    • https://static.usrfiles.com/ugd/8e1900_a878fc704e404dd7a62a293796fe2e1a.pdf
    • https://static.usrfiles.com/ugd/90423f_5553c74b75d94aa2a8a71d4711bfa557.pdf
    • https://static.usrfiles.com/ugd/ceb2e8_f8556c4a5c1b4b6cae016b8bbcf209d6.pdf
    • https://static.usrfiles.com/ugd/08fe48_1afc5ceabf7b400ebb68e1af65f753c0.pdf
    • https://static.usrfiles.com/ugd/f5892c_e5fa94ba249e40d7a88aaf877e110934.pdf
    • https://static.usrfiles.com/ugd/dcbeda_98f37de5370a453ea7291750c8a527f2.pdf
    • https://static.usrfiles.com/ugd/b16523_b496a044867c49c49dcbfddeb3bf4544.pdf
    • https://static.usrfiles.com/ugd/cfbfd2_838e24f83e974a049315e7ec2b56fa3c.pdf
    • https://static.usrfiles.com/ugd/b8c837_82a531338f2d41258cdb4757896912c0.pdf
    • https://static.usrfiles.com/ugd/e3c460_72ac307b81cf4949be167d3491557c3b.pdf
    • https://static.usrfiles.com/ugd/e5cbe5_700cfc27152f473ba449e7d98d5b04f9.pdf
    • https://static.usrfiles.com/ugd/762c1a_09106594e4e74c4b9b6596d068926e0d.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_off00006d4b.bin
14c684f52e67d797c2bb37491e37e29bf1a74252f9f91c997ae24448ce7c3821		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6D4B 5400 bytes
font_01_sfnt_off00007fa2.bin
026c905e5b151321f0b728255f0be8a610dc56bd12c422f5eb93d0529eeea207		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7FA2 9916 bytes

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