Malicious PDF — malware analysis report

Static analysis result for SHA-256 68492117bb740ce9…

MALICIOUS

PDF

40.9 KB Authoring application: LibreOffice Draw
MD5: 8827a6d0d1cd336238ba9b0bdc742208 SHA-1: 558c58063ae1c711a80678b7c251c80d95009e0f SHA-256: 68492117bb740ce935e92a4eb090ab1ecbf0e88b88fcb7c9487ce683e65fd4b4
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file contains a large number of embedded URLs pointing to other PDF documents, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution. While no scripts were directly extracted, the embedded URL structure suggests a mechanism for redirecting users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://northtexasdoodles.com/uploads/1/3/0/7/130776814/9958094.pdf
    • http://gisurat.shengen.info/uploads/2020/01/28/9080824.pdf
    • http://podenij.maliei.xyz/uploads/2020/01/28/e01d118c6.pdf
    • http://coolspamd.com/uploads/1/3/0/6/130620986/edf3d94dec81.pdf
    • http://berezina.pro/uploads/2020/01/28/ed0c2cce3b.pdf
    • http://misbirmingham.com/uploads/1/3/0/6/130639146/b5de3.pdf
    • https://bupirawese.weebly.com/uploads/1/3/0/5/130540186/3007107.pdf
    • http://luzoniduj.dfd.ru/uploads/2020/01/29/gukewufe_solalojidubuli_tasupozufanul.pdf
    • http://mhdodgebrawl.com/uploads/1/3/0/7/130775744/betonogawo.pdf
    • http://sjsbeacon.com/uploads/1/3/0/3/130379266/130379266.html#digestion+and+absorption+of+carbohydrates+biochemistry+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000121b.bin
b78fbb92d84a35e9666b2ce0183474fb5599110742decbf57f71eeb07c5500df		 pdf-font-stream PDF embedded font (sfnt) at offset 0x121B 8096 bytes

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