Malicious PDF — malware analysis report

Static analysis result for SHA-256 54d6fb123bb8d253…

MALICIOUS

PDF

42.1 KB Authoring application: Adobe PDF Library 9.0
MD5: 96df0d3c833664b3718128a9541431eb SHA-1: 5e8b53d7699b32d783d7c9af3a6e53cab1780d5c SHA-256: 54d6fb123bb8d2536a030c83186db840781190d2180e21e1457966fbaeed7b09
150 Risk Score

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule, indicating a mass of external links. The ML classifier also assigned a high probability of maliciousness. The ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or traffic redirection intent. The embedded URLs are likely part of a link farm designed to lead users to 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://allaccessbuildingservices.com/uploads/1/3/0/5/130589362/jakurimafu.pdf
    • http://eganphysiotherapypilates.ca/uploads/1/3/0/4/130435710/2514478.pdf
    • http://vivavocestyling.com/uploads/1/3/0/2/130288893/fetajenovajojavufe.pdf
    • http://musicinmyneighborhood.com/uploads/1/3/0/6/130640078/1253969.pdf
    • http://panafo.kazahstan-kepy.fun/uploads/2020/01/29/pufuxaveve.pdf
    • http://arceasternpanhanlde.org/uploads/1/3/0/3/130379824/musonilatuxori-rolibawanomir-sefubora.pdf
    • http://bhpmedicalconsultants.com/uploads/1/3/0/3/130379488/sikefuzunezonejit.pdf
    • http://nmation.org/uploads/1/3/0/6/130639781/1043012.pdf
    • http://cfirthwssu.com/uploads/1/3/0/6/130620834/6497507.pdf
    • http://yopcrealab.org/uploads/1/3/0/5/130543074/narajuvevu-guredigikus.pdf
    • http://bulverdepregnancy.net/uploads/1/3/0/5/130551303/vinolowavutav_luxob_pikasupikito_bodaviwiwosep.pdf
    • http://fuerst.si/uploads/1/3/0/6/130621217/130621217.html#5+lenguajes+del+amor+test

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001384.bin
6daca03b78c3216fac56c8123fe127acac3fa47504447607ef99f1cf34ff3fcf		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1384 8896 bytes

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