Malicious PDF — malware analysis report

Static analysis result for SHA-256 163714bf930d1f8a…

MALICIOUS

PDF

35.6 KB Authoring application: Scribus
MD5: 88172fc9b3a81a4b44b309f5abbc5431 SHA-1: 8463ae6e2079e21e8306bea8d246cf682a745de4 SHA-256: 163714bf930d1f8a4e6363cdba1b5d0e5c1d7089570455b4c40b2680798d6294
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains a mass external link farm pointing to other PDFs, a common technique for distributing malicious content or conducting phishing. The ClamAV detection and ML classifier strongly indicate malicious intent. The presence of a visual download button further supports the lure-based attack pattern.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://charityaweek.com/uploads/1/3/0/8/130813648/latebos.pdf
    • http://danielstripedtiger.com/uploads/1/3/0/7/130776074/758125.pdf
    • http://mountainxllc.com/uploads/1/3/0/8/130813654/5418454.pdf
    • http://letslivebox.com/uploads/1/3/0/5/130540211/4324feee.pdf
    • http://roche-electricite.com/uploads/1/3/0/5/130538988/gapovurur.pdf
    • http://mydentalpartner.com/uploads/1/3/0/6/130621613/kowixuzobafozeve.pdf
    • http://avidvoid.com/uploads/1/3/0/6/130621077/woxofewo.pdf
    • http://www.rockints.com/uploads/1/3/0/7/130739294/545906.pdf
    • http://emeralddevelopmentinc.com/uploads/1/3/0/3/130324065/vifonasufuvogu-maranojif-vazafosato-tivafowo.pdf
    • http://azairparks.com/uploads/1/3/0/6/130604958/9410553.pdf
    • http://mcclinton.net/uploads/1/3/0/4/130488152/434817.pdf
    • http://ruszkowski.info/uploads/1/3/0/8/130813547/130813547.html#impact+of+inflation+on+economic+growth+in+nigeria+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003449.bin
5d6fff5f510cca42b57fb9311e37108cc9d268dc044fff404ebb2be3cd4f27c2		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3449 8036 bytes

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