Malicious PDF — malware analysis report

Static analysis result for SHA-256 6251aedd606edbc4…

MALICIOUS

PDF

35.9 KB Authoring application: OpenOffice.org
MD5: f808969745889c155425162adcf4c01f SHA-1: 6f48a814653f8c8184cde2e89e461645a2db1f25 SHA-256: 6251aedd606edbc43455e0ebe158c1abfbbd4606f7c28e7eac324a14086e1343
152 Risk Score

Malware Insights

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

The PDF contains a significant number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various domains and appear to be part of a link farm. The ClamAV detection and ML classifier also indicate maliciousness, with ClamAV specifically identifying it as Pdf.Phishing.TtraffRobotInstall. The embedded URLs are likely used to redirect users to malicious sites or to manipulate search engine rankings.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://anuqa.net/uploads/1/3/0/6/130604093/sijijumodinubol.pdf
    • http://andrewgouldmusic.com/uploads/1/3/0/6/130603873/3013076.pdf
    • http://shop.akcesoriacorp.com/uploads/1/3/0/5/130551880/tojaz.pdf
    • http://ooredoogroup.net/uploads/1/3/0/2/130288577/130288577.html#google+analytics+backlinks+report

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00000fc0.bin
c0fe1d3e26932bfefac503b551f166a5e1e49f58233acd2a90fae265b48f33af		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFC0 8332 bytes

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