Malicious PDF — malware analysis report

Static analysis result for SHA-256 9331539088fb9c24…

MALICIOUS

PDF

34.4 KB Created: 2020-04-17 02:14:54 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 7be5806db7d93f56d77c0ea9661b6bb9 SHA-1: fc9544b243067b136a3a4f1afc93f07eb1f12588 SHA-256: 9331539088fb9c2495bfa90e32fffe47d3bf6c17a7e04630ffa1f3c0d4551ca7
122 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 various domains. This behavior is indicative of a link farm or a redirection mechanism designed to obscure the ultimate destination. The ClamAV detection 'Pdf.Dropper.Agent-9019299-0' further supports its malicious nature. The primary attack pattern involves leveraging these links to potentially deliver further payloads or redirect users to malicious websites.

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-9019299-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Dropper.Agent-9019299-0
  • 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://agwinsurance.com/uploads/1/3/0/8/130874526/130874526.html#alpine+linux+apk+packages
    • http://peakdesignnordic.se/uploads/1/3/0/2/130272932/zeganaxewowotobef.pdf
    • http://legacyinwords.com/uploads/1/3/0/4/130488069/tikatupidekej_zuzetinesegud.pdf
    • http://oneshieldfinancial.com/uploads/1/3/1/4/131409305/41225c.pdf
    • http://oc1toolteam.com/uploads/1/3/0/2/130287878/furutulekazuxefa.pdf
    • http://cristalbay.com/uploads/1/3/0/9/130969445/wunerowunufimiju.pdf
    • http://infinityairshreveport.com/uploads/1/3/0/6/130622011/gefavojugav_salapotute_bexibibitabug.pdf
    • http://portal2world.org/uploads/1/3/0/2/130289448/8871065.pdf
    • http://a-pod.net/uploads/1/3/1/4/131408572/8511643.pdf
    • http://nextcuff.com/uploads/1/3/1/3/131380558/8837774.pdf
    • http://adamjericho.com/uploads/1/3/1/0/131071180/174180.pdf
    • http://syferstr.com/uploads/1/3/0/2/130273738/gajafugojomilev.pdf
    • http://elesjm.com/uploads/1/3/0/7/130739162/9d02d64d.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_off00005eac.bin
e8546f4572fce1ed9958ed5d281cb325e05f7c090d6581d83127fa719c03da96		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5EAC 7944 bytes

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