Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f49aef1059d160b…

MALICIOUS

PDF

45.8 KB Authoring application: Mobipocket Creator
MD5: c980b39ba42be6c434111bba8e266541 SHA-1: a18f853003b12452eda91e2b293b1b32cc967c42 SHA-256: 4f49aef1059d160b1c7a0f4cc50fe92a57f0157693e743687144a5e142249967
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including ClamAV and an ML classifier, for malicious content. The PDF_SEO_LINK_FARM heuristic indicates the presence of a mass external PDF link farm, with the primary URL being https://viditoza.weebly.com/uploads/1/3/0/2/130272569/menevojuzobupedoreru.pdf. This suggests the document's purpose is to redirect users to a network of potentially malicious websites, likely for phishing or distributing further malware. The document body contains garbled text and embedded URLs, reinforcing the link farm detection.

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 https://viditoza.weebly.com/uploads/1/3/0/2/130272569/menevojuzobupedoreru.pdf
    • http://sparksrvpark.com/uploads/1/3/0/2/130291884/zujusajigixolob-reresenuresibub-wugajedi-kinomasajawe.pdf
    • http://stazkoassociates.com/uploads/1/3/0/6/130621895/xakili.pdf
    • http://safebeautymovement.org/uploads/1/3/0/6/130639266/roxufujovujibuz.pdf
    • http://myrocketflow.com/uploads/1/3/0/6/130604243/4371307.pdf
    • http://nosborne.com/uploads/1/3/0/5/130540788/52a833a666e9.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/6/130639760/130639760.html#new+movies+2008+bollywood

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001163.bin
a4284c75c943dfe6e633039696ae94ecd0321980180d65ed10323466e3bdf71a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1163 8696 bytes
font_01_sfnt_off00006b99.bin
710d38df22328e4cf54aeb4be252a5fa21cdad1c35733af5ded16e0c03f80060		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6B99 16440 bytes

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