Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccfe3ee60bc4399c…

MALICIOUS

PDF

38.9 KB Authoring application: QPDF
MD5: a52c571c6fbaaf19543009e43e22ced5 SHA-1: 07eaa767ea06508db1f064bf05991dbde9dcd9c5 SHA-256: ccfe3ee60bc4399c07d31e77e2aca710d5d4db8e6ad62b346d54a8f749a64dae
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, as indicated by the PDF_SEO_LINK_FARM heuristic. The ML classifier and ClamAV detection strongly suggest malicious intent. The document body, though partially corrupted, contains references to the URLs and appears to be a lure for the linked content, likely related to SEO manipulation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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.
  • ClamAV: Pdf.Phishing.TtraffRobotInstall-7605656-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.TtraffRobotInstall-7605656-0
  • 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://meridiansq.com/uploads/1/3/0/4/130488829/525a2e.pdf
    • http://nickihumblesbridalbeauty.com/uploads/1/3/0/2/130272582/38ed2.pdf
    • http://inklingsacademy.net/uploads/1/3/0/4/130476120/wuwifew.pdf
    • http://koahspearfishing.com/uploads/1/3/0/6/130604610/wabowadutoka-muzutatagoguxal-sikobopin.pdf
    • http://missoulaautotinting.com/uploads/1/3/0/5/130589305/3e8923c93d329c.pdf
    • http://northernraiderstrackteam.com/uploads/1/3/0/4/130436337/fuzejaruw-wixanifin.pdf
    • http://familiesfeedinghope.com/uploads/1/3/0/4/130490250/4036325.pdf
    • http://mpnetwork.com.au/uploads/1/3/0/7/130739198/130739198.html#goalie+stick+curve+guide

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000117a.bin
a916a75487df36b8111e14100b47f8e0012840a52f4b4ec72a60e148cecc4211		 pdf-font-stream PDF embedded font (sfnt) at offset 0x117A 8680 bytes

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