Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5db12a5860480da…

MALICIOUS

PDF

30.2 KB Authoring application: ImageMagick
MD5: aeedcdb8868d5dd2369866bb3d115714 SHA-1: eb121507f998e09e9a02b713c6708da33d7f753c SHA-256: e5db12a5860480da45e8303cccaf9adfc5b17fb85cbe8545999eef1ae13529b7
150 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and an ML classifier gave a high confidence score. A critical heuristic identified a large number of embedded external PDF links, with the primary domain being 'kavavavi.vipiski-besplatno54.icu'. This indicates a likely phishing or SEO spam campaign designed to redirect users to numerous other PDF documents.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://kavavavi.vipiski-besplatno54.icu/uploads/2020/01/28/613977.pdf
    • http://essentiallyempoweredwellness.com/uploads/1/3/0/6/130604951/julifu.pdf
    • http://eastwestmine.com/uploads/2020/01/28/zekutebubiki.pdf
    • http://annmariebagge.com/uploads/1/3/0/2/130289247/9154553.pdf
    • http://newspinlaser.net/uploads/1/3/0/5/130589007/1710387.pdf
    • http://ngoji.com/uploads/1/3/0/4/130476738/zudubakatilo.pdf
    • http://bernardobellostudio.com/uploads/1/3/0/2/130272101/130272101.html#university+physics+12th+edition+young+and+freedman+pdf
    • http://bernardobellostudio.com/uploads/1/3/0/2/130272101/130272

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001299.bin
1d52f78a90829f27bccfe7f742fb2354207b00ba12560c13a314b37edeca40b2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1299 7760 bytes

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