Malicious PDF — malware analysis report

Static analysis result for SHA-256 a7ad0ef55efa1074…

MALICIOUS

PDF

40.0 KB Created: 2020-06-16 18:15:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 884e2f862cf506bda85f525e59ffc6ea SHA-1: 02122c1d4c40f2b41c4408a822409768a44baa80 SHA-256: a7ad0ef55efa107405a04de8097c946d1040c39ab451f47bafc5d5fe196b429b
102 Risk Score

Malware Insights

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

The PDF document contains a link farm of numerous external URLs, suggesting a phishing or social engineering attempt. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates that the document likely instructs the user to open a password-protected archive, a common tactic to bypass gateway security. The presence of many similar URLs across different domains points to a coordinated effort to distribute malicious content.

Heuristics 4

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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://mmcvbrotherscontractors.net/uploads/1/3/0/7/130739371/130739371.html#pdf+xchange+print+driver
    • http://realty4d.com/uploads/1/3/0/7/130738975/kutexigemudo.pdf
    • http://studiofpilates.net/uploads/1/3/0/9/130969237/6048544.pdf
    • http://macecontractorsltd.com/uploads/1/3/0/8/130814014/tejuwizanowa.pdf
    • http://garagedawgtraining.com/uploads/1/3/0/9/130969291/334158af911.pdf
    • http://heavenlyhandsholistictherapy.com/uploads/1/3/0/5/130550814/tununiru.pdf
    • http://2zm.undesirable.us/uploads/1/3/0/5/130550910/6938965.pdf
    • http://dunkhilldrygoods.com/uploads/1/3/0/4/130476587/2987806.pdf
    • http://sasoftwareonline.co.za/uploads/1/3/0/7/130738797/woliwuvagojewaparir.pdf
    • http://searingtech.com/uploads/1/3/0/2/130287514/pewizamavup.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_off00005cd6.bin
cd0cb9ffe00ebaf01f65438967317c04a6e71572199a95079ba351f3e7506f56		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5CD6 5012 bytes
font_01_sfnt_off00006dd8.bin
95a80aeb49107db699a510fe24916028d0eaee9fc3657982c79840be07d3e9ee		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6DD8 10732 bytes

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