Malicious PDF — malware analysis report

Static analysis result for SHA-256 c3f063ee4703898a…

MALICIOUS

PDF

39.8 KB Created: 2020-05-21 13:45:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 380137933d45c46197428e967c7e04d2 SHA-1: ffc336bd11b35377e1e865e323f369df842e58d3 SHA-256: c3f063ee4703898a89273fe86ce05ac4e5c4060b8f47816451dcfc86b78c58e9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of external links, many of which point to other PDF files on unrelated domains, suggesting a link farm or SEO abuse. The 'SE_CALLBACK_LURE' heuristic indicates the document prompts the user to call a phone number, consistent with callback phishing or tech-support scams. While no scripts were extracted, the extensive link farm and callback lure strongly suggest a social engineering attack aimed at defrauding the user.

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.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns
  • 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://ttthardstyle.com/uploads/1/3/0/7/130740049/130740049.html#cryptography+and+network+security+principles+and+practice+seventh+edition+pdf
    • http://thebutlergroupllc.net/uploads/1/3/1/4/131454603/denafanuwovavi_pemaxowu_berumofe_difuluk.pdf
    • http://globalaluminumfurnishings.com/uploads/1/3/0/6/130621051/5036857c3c35f.pdf
    • http://tattoosbyaross.com/uploads/1/3/1/8/131856706/0427f62eda8.pdf
    • http://ciardhamedia.com/uploads/1/3/0/5/130539923/3161670.pdf
    • http://strattonacademy.com/uploads/1/3/1/3/131383266/bozolorum.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_off000070a2.bin
2a0d3d5c594279f3f6d951910ac4f83487e317cd114e3bbc94b41233ef9679c7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x70A2 10280 bytes

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