Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd1e79896b6eb2c0…

MALICIOUS

PDF

44.2 KB Created: 2020-05-13 15:47:23 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 667a2397fb98d932ca154fc713f5ca81 SHA-1: 7b6ae489e1e406ab5443e2cb11b028bf28e5f28e SHA-256: cd1e79896b6eb2c0c7efce1180df6f2fd4bbdb2f3f032b3db1b51c094f4fd618
62 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a heuristic indicating it is part of a link farm, with numerous external links pointing to other PDF files. The document body mentions "messaging app for android" and includes a URL that appears to be part of this lure. The primary attack pattern involves directing users to a large number of external, potentially malicious, websites.

Heuristics 3

  • 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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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 http://4angelstshirts.com/uploads/1/3/1/3/131378779/131378779.html#messaging+app+for+android+2.+3.+6
    • http://gfmmortgages.com/uploads/1/3/1/1/131163763/ef2fd.pdf
    • http://vangilderfarms.com/uploads/1/3/0/5/130551856/kaparopu.pdf
    • http://jamiecoleman.com/uploads/1/3/1/4/131438059/doxowun_bakalowemu_xevozo.pdf
    • http://vancouvermobilephonerepair.com/uploads/1/3/1/1/131164297/4073618.pdf
    • http://greaterlifefinancial.com/uploads/1/3/1/0/131071066/zuwomudul.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000080e4.bin
6336e2f22d6f15563a5af3a3672cfc8b963ef9546f6189074f5a477b6c72821e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x80E4 10812 bytes

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