Malicious PDF — malware analysis report

Static analysis result for SHA-256 717f9d7c072f465c…

MALICIOUS

PDF

41.9 KB Authoring application: pstoedit
MD5: f8f0d82173d62ca739b8189333d44cae SHA-1: 17b6c10927331eaad74cb8621de5195a36116c6a SHA-256: 717f9d7c072f465c262267a12acda0d767afefe87023f5235c89b2bb1defa309
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, identified by the PDF_SEO_LINK_FARM heuristic, which strongly suggests a link farm or phishing attempt. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection purpose. While no scripts were explicitly extracted, the structure and heuristics indicate the document is designed to redirect users to external, potentially malicious, content.

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://molliemonahan.com/uploads/1/3/0/6/130604294/8980156.pdf
    • http://investedin.net/uploads/1/3/0/3/130379061/95966.pdf
    • http://proschconsulting.com/uploads/1/3/0/5/130539612/2f5b062d1ef0.pdf
    • http://lauranathanparty.com/uploads/1/3/0/2/130273789/nolovomugazew.pdf
    • http://canbabaoglu.com/uploads/1/3/0/7/130740442/8783728.pdf
    • http://neubrow.net/uploads/1/3/0/5/130540401/risezelefawajew.pdf
    • http://spanishin20lessons.com/uploads/1/3/0/5/130588784/c08d02c5367.pdf
    • http://mercaditosustentable.com/uploads/1/3/0/6/130620334/muzufovejepi_teriresop_manabugu.pdf
    • http://appel-stores.shop/uploads/1/3/0/7/130776826/130776826.html#kidney+disease+meaning+in+tamil
    • https://savannah.gnu.org/projects/freefont/
    • http://www.gnu.org/licenses/
    • http://www.gnu.org/copyleft/gpl.html

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001306.bin
8b9c4edbec86f886a10f6eb5ea089bd0980ad0e9a883bfd2c1fe4654370dbf2a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1306 7840 bytes
font_01_sfnt_off00005b7b.bin
efa43024fc6bee1758781a9d423a6860db4c845aaeda0c2e64498a940f04ec86		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5B7B 8648 bytes

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