Malicious PDF — malware analysis report

Static analysis result for SHA-256 60873f7bb4874079…

MALICIOUS

PDF

42.6 KB Authoring application: pstoedit
MD5: 58e5c5e742157cff87847252ae3ec733 SHA-1: 997af9717eaf84deffdeae30d9aed1d05a9f5fb3 SHA-256: 60873f7bb4874079e247e939cfa518b896900dc715b6052b02f443dc2b04e8cc
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external URLs, identified by the PDF_SEO_LINK_FARM heuristic. These URLs point to various domains, suggesting a link farm or SEO manipulation tactic. The ClamAV detection and ML classifier further confirm its malicious nature, likely as a phishing or redirection mechanism. No scripts were extracted, but the embedded URLs are the primary indicators of malicious activity.

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://koahspearfishing.com/uploads/1/3/0/6/130620296/badalodaw_kugakutugir_sitez_vadali.pdf
    • http://mothersdaymilers.org/uploads/1/3/0/4/130488955/ff25c3e7.pdf
    • http://macdesignthinking.com/uploads/1/3/0/6/130604258/7377460.pdf
    • http://nworparenting.com/uploads/1/3/0/6/130621004/jataborabekof.pdf
    • http://aaagospelminister.com/uploads/1/3/0/4/130478261/razebu-faboz-bupabi.pdf
    • http://worldcret.com/uploads/1/3/0/2/130270986/lefelosiroxegubagu.pdf
    • http://balacas.com/uploads/1/3/0/2/130289589/18e129.pdf
    • http://mufo.istorii24.net/uploads/2020/01/28/8877300.pdf
    • http://reverend.us/uploads/1/3/0/2/130270956/bosowoware_rirese.pdf
    • http://nwcg.yourgin.com/uploads/1/3/0/6/130604806/65dc0a1a.pdf
    • http://scandinavianrelocationgroup.com/uploads/1/3/0/7/130739873/mefifafadalokig.pdf
    • http://djsacademy.com/uploads/1/3/0/2/130287538/130287538.html#kennen+guide+german

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000012cf.bin
3f8e431b039b38b0ef0b355db885fda762e38e18caf2a2e29a6dc8aef0196320		 pdf-font-stream PDF embedded font (sfnt) at offset 0x12CF 8748 bytes

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