Malicious PDF — malware analysis report

Static analysis result for SHA-256 fad6f9b04636601a…

MALICIOUS

PDF

35.8 KB Authoring application: Adobe PDF Library 9.0
MD5: 5588e018ff0a83e2db8ca93eda5cef06 SHA-1: ec88f8d22c606042523bb0dd7d9feb1c93a72da4 SHA-256: fad6f9b04636601a3f8d4b5db43d88b39e9db94ebf44ff6c43f1b99443ea6875
120 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF file contains a large number of embedded links to external websites, a technique commonly used for phishing or distributing further malware. The heuristic PDF_SEO_LINK_FARM specifically identifies this pattern, indicating a malicious intent to drive traffic to these sites. The ClamAV detection further confirms its malicious nature, classifying it as Pdf.Phishing.TtraffRobotInstall. No scripts were extracted from this sample, but the presence of numerous unknown-reputation URLs strongly suggests a phishing or content-luring attack.

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://natureinnny.org/uploads/1/3/0/2/130291575/1037251.pdf
    • http://immediate-insight.com/uploads/1/3/0/4/130488220/dazokikexo_tujuwakaru_jorosedexixisuj.pdf
    • http://mzocoill.com/uploads/1/3/0/4/130483494/6b10838.pdf
    • http://treeoflifecg.com/uploads/1/3/0/6/130639337/rudetamaninuxug.pdf
    • http://newstylemarket.com/uploads/1/3/0/8/130814562/130814562.html#fifa+world+cup+2018+official+team+of+the+tournament

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001087.bin
ef8516d1e40fac7daa76c2236b0a6d07f0b33f92626f5790a2266b09fe779f05		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1087 8440 bytes

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