Malicious PDF — malware analysis report

Static analysis result for SHA-256 40b7fd06d96b04fd…

MALICIOUS

PDF

26.0 KB Created: 2020-05-15 23:45:33 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 58b732ff46889bd7d7d72c46ade21ed2 SHA-1: ba8cdf4f0aa3c1069357450abc73718dcfc0e58a SHA-256: 40b7fd06d96b04fd7a9ede42ca5bef8272de3a3442a34890f6f9e38c0eb06881
62 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 point to similarly structured URLs on different domains. This pattern is indicative of a link farm or SEO spam operation, potentially used to drive traffic or host phishing content. The document body itself is largely unreadable due to encoding issues, but the presence of URLs and the PDF_SEO_LINK_FARM heuristic strongly suggest a malicious intent to redirect users to potentially harmful 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://resrepairtx.com/uploads/1/3/1/3/131382032/131382032.html#green+background+design+template
    • http://rantingcritic.com/uploads/1/3/0/5/130589205/wesibomipok.pdf
    • http://itdoerakje.com/uploads/1/3/0/3/130379503/puged-dapeba-virise.pdf
    • http://afterthefallinc.com/uploads/1/3/1/4/131483603/2628105.pdf
    • http://stpfloraldesign.org/uploads/1/3/0/7/130740049/dokuzinesotopusipo.pdf
    • http://goodstewardsofrockingham.org/uploads/1/3/0/5/130539097/najakefanujosadaxut.pdf
    • http://grccoin.com/uploads/1/3/0/5/130551160/6044755.pdf
    • http://dalesmobilehauling.com/uploads/1/3/0/7/130739597/8962009.pdf
    • http://philippemora.net/uploads/1/3/0/7/130739878/vajivonepawone.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_off0000410d.bin
a6728fd17947be0055e594d5406c1b1b39900146a6db1ec4851133e0cb3e335f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x410D 8228 bytes

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