Malicious PDF — malware analysis report

Static analysis result for SHA-256 587c9665b303339c…

MALICIOUS

PDF

37.9 KB Authoring application: Karbon
MD5: f64d08809902d604b14ed631c5b03ddc SHA-1: 7a3de957b462dca7b64ba5939a5aa1004b8a19b1 SHA-256: 587c9665b303339c25ef061eb61e4d53752ec08fb45d2c17f6e0cfbba0102517
150 Risk Score

Malware Insights

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

The PDF file contains a heuristic firing for a PDF link farm, indicating it's designed to redirect users to multiple external URLs. The document body, while containing text about Adansonia digitata medicinal uses, also embeds several URLs that point to other PDF or HTML files hosted on suspicious domains. This suggests a phishing or redirection attack aimed at leading users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://kivelos.audiostart17.icu/uploads/2020/01/28/wakovimosaxure_lefisikerewub_tazarofovopiw.pdf
    • http://nh-dreamhomes.com/uploads/1/3/0/2/130289380/kabizozoke.pdf
    • http://lakesideranchandresortfl.com/uploads/1/3/0/4/130489926/8522457.pdf
    • http://mhrandlenovels.com/uploads/1/3/0/6/130621654/130621654.html#adansonia+digitata+medicinal+uses

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001015.bin
73f4a2addb42c5565fdd68304c9107dcf3a803393830f241532664cc306961b5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1015 8716 bytes

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