Malicious PDF — malware analysis report

Static analysis result for SHA-256 763504ce79d5d05d…

MALICIOUS

PDF

34.5 KB Created: 2020-05-13 22:49:18 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: a5ae944cf2de944c8fad415fe2c90a7f SHA-1: b413fcffbfa8ca7ec7f347feadb910b1a97dcf09 SHA-256: 763504ce79d5d05de5cee629da7f657801f41c772ca77a28b751cfdffa6100b2
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, many of which are numerically or generically named, suggesting a link farm or SEO poisoning tactic. The document body, though heavily obfuscated, contains references to a 'consumer reports reliability survey' and includes numerous URLs pointing to PDF files hosted on various domains. This indicates a likely attempt to redirect users to malicious content or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9947

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://officerethink.com/uploads/1/3/1/8/131871569/131871569.html#consumer+reports+reliability+survey+2018
    • http://madisonnadinephoto.com/uploads/1/3/0/8/130814421/ba34453.pdf
    • http://bwesllc.com/uploads/1/3/1/4/131437839/retat-xexeregari-rupek.pdf
    • http://marcmoglen.com/uploads/1/3/0/8/130815437/6584292.pdf
    • http://raycityrollers.com/uploads/1/3/0/9/130969934/8647e375fb01.pdf
    • http://myperfectlife.net/uploads/1/3/1/3/131381447/a0975921c.pdf
    • http://trufflesliving.com/uploads/1/3/0/6/130605122/vivejegom-zemeduziwaza.pdf
    • http://harinet.net/uploads/1/3/1/4/131437331/bexazudogogoteguwum.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_off00005846.bin
3212dce7e66de1186a370f9d00a860e008f66b6744b8788a8e69e008b7057bcd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5846 11540 bytes

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