Malicious PDF — malware analysis report

Static analysis result for SHA-256 086daf50f61a5735…

MALICIOUS

PDF

41.4 KB Authoring application: Adobe PDF Library 9.0
MD5: 0fe550d63bb42818bb061313ab9b1524 SHA-1: 7479ac1669ec7f7e33d395558286975f32479e59 SHA-256: 086daf50f61a57352414a4e470dd2faf8290e7a720b3aa34374213b1f33195d0
152 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which point to other PDF files hosted on various domains. The document body text, while heavily obfuscated, mentions "Bently nevada 3500 manual pdf" and includes multiple URLs that likely serve as lures. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall' and the ML classifier output strongly indicate malicious intent, likely to redirect users to malicious content or download further malware. The embedded URLs are the primary indicators of compromise.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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 https://lerulevogoxeb.weebly.com/uploads/1/3/0/5/130551302/ef6922.pdf
    • http://sulev.campolasalina.com/uploads/2020/01/27/dekizajo-tulexenoxitox-kapinumi-sudej.pdf
    • http://rcklaframes.com/uploads/1/3/0/6/130621193/9571956.pdf
    • http://lotusmobiledetailing.ca/uploads/1/3/0/6/130621941/495759.pdf
    • http://labuxe.your-website.name/uploads/2020/01/28/23ffaa7e.pdf
    • https://bagosinoz.weebly.com/uploads/1/3/0/5/130550756/7a69394eb.pdf
    • http://hnhojjat.com/uploads/2020/01/27/jowira.pdf
    • http://printalluk.com/uploads/1/3/0/6/130621568/rusamibodojog-paganiru-tibekuxuk.pdf
    • http://fuw.washcomes.com/uploads/2020/01/29/7506726.pdf
    • http://snohomishminigolf.com/uploads/1/3/0/5/130540585/522a96.pdf
    • http://somersetfoodtrail.org/uploads/1/3/0/4/130493248/130493248.html#bently+nevada+3500+manual+pdf
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011ea.bin
439be30efcd7c58669726bf3819881381aad61bb1ca0ada87172521e4918570d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11EA 7560 bytes
font_01_sfnt_off00005aed.bin
53c89d310a4aefe1165fd6a1a5091d003d9be9159b1b2b97466b793dcb96c7eb		 pdf-font-stream PDF embedded font (sfnt) at offset 0x5AED 16276 bytes

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