Malicious PDF — malware analysis report

Static analysis result for SHA-256 07546806ac03c947…

MALICIOUS

PDF

36.7 KB Authoring application: Poppler-utils
MD5: c1ec3c57501de7a3f1e6a39b48f4a0aa SHA-1: 6464ad2a3fb66903a6448f2d7dabf74162de8916 SHA-256: 07546806ac03c9472a718c3cc75e3fa9a79fbafe5eb2a0070dadbed4ca92613f
152 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, pointing to various PDF and HTML files. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' and the ML classifier output strongly indicate malicious intent. The embedded URLs are likely used to distribute further malicious content or conduct phishing operations.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9994

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://sujitaomgoit.com/uploads/1/3/0/7/130739607/233588.pdf
    • http://orvjamboree.org/uploads/1/3/0/6/130605112/jiluxilodututos-bidebu.pdf
    • http://2ourhealth.net/uploads/1/3/0/5/130544625/1115364.pdf
    • http://dancinggoatsanctuary.com/uploads/1/3/0/7/130775545/130775545.html#10th+class+biology+textbook+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001120.bin
044235194fe8f0dd2a0f43b32acd432934674e3c4b107279a786efb1b0f135b8		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1120 8136 bytes

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