Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ec40f09eed44578…

MALICIOUS

PDF

44.4 KB Created: 2020-03-24 03:25:29 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: ada679db4f35e916914e51554fbd3394 SHA-1: 8c5577070291e5b9096ccd52a24564aceae65ee7 SHA-256: 1ec40f09eed44578e96b843e9a3c80d134dd3e05a9363ced33ac94046d9dd4fa
152 Risk Score

Malware Insights

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

This PDF file was identified as malicious by ClamAV and an ML classifier, exhibiting characteristics of a link farm. It contains numerous embedded URLs pointing to other PDF documents hosted on various domains. The primary function appears to be directing users to these external resources, potentially for SEO manipulation or to serve as a distribution point for further malware. The document body itself is heavily obfuscated and contains some of the linked URLs.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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.
  • ClamAV: Pdf.Dropper.Agent-9093627-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9093627-0
  • 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://giftneat.com/uploads/1/3/0/5/130539218/130539218.html#factores+de+riesgo+endogenos+y+exogenos+del+cancer
    • http://8acontract.govcontracting.org/uploads/1/3/0/6/130620451/zaben_kamiluxiborixa_likifadekolik.pdf
    • http://myforeverfriends.com/uploads/1/3/0/8/130814782/famanaso.pdf
    • http://mail.makebelievemedia.co.za/uploads/1/3/0/6/130622103/4696283.pdf
    • http://clue.show/uploads/1/3/0/6/130604758/kokepixoxobu.pdf
    • http://sanfranauctions.com/uploads/1/3/0/5/130543156/1107889.pdf
    • http://excelmediasvg.com/uploads/1/3/1/0/131070237/679502.pdf
    • http://immersedtherapy.net/uploads/1/3/0/6/130639476/5957413.pdf
    • http://newamericanwest.com/uploads/1/3/0/7/130775174/9d3661.pdf
    • http://qandiawards.com/uploads/1/3/0/6/130604590/labex.pdf
    • http://bigcreekkennels.com/uploads/1/3/0/8/130813582/fafukorozipud_xiwemabevu_famibesozovomu_gevim.pdf
    • http://amberbowmanfit.com/uploads/1/3/0/2/130287542/3348779.pdf
    • http://biltmorecreations.com/uploads/1/3/0/5/130551461/lejumebasogetat_ludokofik_vitigavufofojuf.pdf
    • http://thirdeyetarot.co/uploads/1/3/0/4/130476276/6463375.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_off00008290.bin
4e6ff72b657e798bc4fd0a86cdaabed285ebb0c6690088c6d3aad3ac44a017be		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8290 9104 bytes

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