Malicious PDF — malware analysis report

Static analysis result for SHA-256 891ec6c2114993bc…

MALICIOUS

PDF

32.9 KB Created: 2020-05-15 05:18:14 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 8984cad5aa09e522272b531e4c70a727 SHA-1: 4005a3288eec9e35263833fdfce9037d20134779 SHA-256: 891ec6c2114993bcd5734f03791b107b9efee9a4aa6cb8b784a151f7d590b17b
62 Risk Score

Malware Insights

MITRE ATT&CK
T1059.001 PowerShell

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or SEO manipulation tactic. The document body itself is heavily obfuscated and contains some of the same URLs, reinforcing the idea that the primary purpose is to redirect users to external content. No scripts were extracted, limiting the ability to determine further malicious actions.

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://allamericanhandyman.org/uploads/1/3/0/2/130288775/130288775.html#chemical+bonding+in+organic+chemistry+pdf
    • http://killeenmasonry.com/uploads/1/3/0/6/130604263/4652017.pdf
    • http://registerforemail.com/uploads/1/3/0/7/130775805/kerukobux_lusitipaja.pdf
    • http://acl-company.com/uploads/1/3/0/6/130620532/8825129.pdf
    • http://havencounsellingedinburgh.com/uploads/1/3/0/2/130272600/fidub-tesel.pdf
    • http://journeystohealth.net/uploads/1/3/0/4/130483445/waliliboferez.pdf
    • http://inhetoog.nl/uploads/1/3/0/5/130543166/cb3fa07.pdf
    • http://sharonthomass.com/uploads/1/3/1/3/131384489/be350ac806cf.pdf
    • http://unitedpermianbasin.net/uploads/1/3/0/6/130603895/d777c0a6f9f4.pdf
    • http://heartst.art/uploads/1/3/0/7/130775150/9ebaa7a1c5.pdf
    • http://jackseverydaymusic.com/uploads/1/3/1/8/131856672/e7357112a87502d.pdf
    • http://spanishnoemy.com/uploads/1/3/0/5/130551586/d5db9c.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_off000053cf.bin
4e1576940b1016f72dc2e42e9123cd5d7f0e327f88724f9c3bb27f5a9aed5fa6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x53CF 10616 bytes

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