Malicious PDF — malware analysis report

Static analysis result for SHA-256 7469138cb7b25892…

MALICIOUS

PDF

41.0 KB Authoring application: OpenOffice.org
MD5: 1802c9d17e4d4082e0ea199beffbec9c SHA-1: 7fa131c34c087650dd35360a3bd33757f6ce5ff0 SHA-256: 7469138cb7b258928e4fe72cb877170d93620cb84af02998c8a3685f566553d3
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, a technique often used for SEO manipulation or to distribute further malicious content. ClamAV identified this as 'Pdf.Phishing.TtraffRobotInstall-7605656-0', suggesting a phishing or traffic redirection purpose. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious intent to redirect users to a network of potentially harmful websites.

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://andreatomassi.com/uploads/1/3/0/4/130483783/1847b.pdf
    • http://nityakumar.com/uploads/1/3/0/4/130476168/tusoreloxotukitufi.pdf
    • http://onsightcoffee.com/uploads/1/3/0/6/130604768/duluvur.pdf
    • http://shardworld.com/uploads/1/3/0/7/130739086/rowivatex-sisapegenojo-negujimexapos.pdf
    • https://zebevasibuwetu.weebly.com/uploads/1/3/0/4/130488979/817c4.pdf
    • http://nationalfootballcheerleadersalumni.org/uploads/1/3/0/4/130479044/130479044.html#find+area+perimeter+of+square+and+rectangle+in+c
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010b5.bin
2c17e66900b56c4e82a614258600bbd34be4e325b5edd093fc1c98e60bd60345		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10B5 8228 bytes
font_01_sfnt_off000058fa.bin
1d1fa5121415f8f5353993473374918b9d2a38f433752094af4cce5d3be72c8c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x58FA 16312 bytes

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