Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ae764c753e23302…

MALICIOUS

PDF

40.6 KB Authoring application: ImageMagick
MD5: 32b82e231d874a3887ea819f7375eb96 SHA-1: 90e69ffa90db86150d0a8e70e5a9801d40c653a2 SHA-256: 9ae764c753e23302ced177f3f25c3b198fc01b04b1ff9b188b48e765b6aeb9b2
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including a critical finding for a link farm containing numerous external PDF URLs. The ML classifier also assigned a high probability of maliciousness. The embedded URLs point to a collection of PDFs, suggesting a phishing or malware distribution campaign. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports this assessment.

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://oharikoamoon.com/uploads/1/3/0/2/130289479/tezulig.pdf
    • http://piraredono.suzr.info/uploads/2020/01/29/6097520.pdf
    • http://sonoranorganics.com/uploads/1/3/0/5/130540040/cc261.pdf
    • http://niagaramedia.us/uploads/1/3/0/5/130588556/pisosasugigodog_wazowabot_tuvajifu_rilek.pdf
    • http://longhollow.net/uploads/1/3/0/2/130289063/kaboxusom.pdf
    • http://michianawomeninconstruction.com/uploads/1/3/0/6/130605358/dimelevobegifo-dufuzufunazi-jebatamamiwo-rokigumagub.pdf
    • http://myweeklyonline.com/uploads/1/3/0/5/130551441/doxonadaver.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/4/130436410/130436410.html#hibernate+interview+questions+and+answers+for+experienced+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011f7.bin
e5208d805e5e5a0e4bdfdab19ba1cd9f9a618c230149953d29463600fd3cb50e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F7 8804 bytes

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