Malicious PDF — malware analysis report

Static analysis result for SHA-256 ada5bec206621f65…

MALICIOUS

PDF

62.4 KB Authoring application: Adobe PDF Library 9.0
MD5: a6069a7b5744310fea9fe9965f97aaaf SHA-1: 943d1fb0a8b1c8c13080060767586f4fde2a797c SHA-256: ada5bec206621f65dad1795a4f00ca80e0a444cfdcb263f5d5611a8fceb74c6e
150 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various domains. The document body mentions 'Rapidex english speaking course kannada book free download pdf', suggesting a lure to trick users into downloading further content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution via these linked PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9988

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://translatorquote.com/uploads/1/3/0/4/130436121/tupapitiwuwuf_zudebuliz.pdf
    • http://slushproductions.com/uploads/1/3/0/2/130288391/zajugelepetilux.pdf
    • http://mustangremediation.com/uploads/1/3/0/8/130813357/nulowabezuxajenesis.pdf
    • http://littlehimsandhers.com/uploads/1/3/0/7/130739007/c8e4d0538.pdf
    • http://foothillsbiblefellowship.com/uploads/1/3/0/2/130289603/130289603.html#rapidex+english+speaking+course+kannada+book+free+download+pdf

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010b6.bin
2f983b353acd4f9fb8edfb3a5d2f6421a76de401457a47ef6fb5aea5d24b456d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B6 8208 bytes
font_01_sfnt_off000092f6.bin
9b89be2634ab9b759742012743eb2ff8bd8fda37d9d6627217b94a9255599859		 pdf-font-stream PDF embedded font (sfnt) at offset 0x92F6 19168 bytes

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