Malicious PDF — malware analysis report

Static analysis result for SHA-256 c4a2baa153a61401…

MALICIOUS

PDF

40.8 KB Authoring application: Poppler-utils
MD5: 1483de91704e49a382a35df533557374 SHA-1: 6ceb8abac2f3a398af0d2782ffe77a8a785a4705 SHA-256: c4a2baa153a61401491057f1cdb3185e40e6c81f9507f99aa83f988ea56bc820
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1204.002 Malicious Link

The PDF file was flagged by multiple heuristics, including a critical PDF_SEO_LINK_FARM rule and ClamAV detection as Pdf.Phishing.TtraffRobotInstall-7605656-0. The document body contains numerous URLs, all of which are currently unknown in reputation. These URLs are likely part of a link farm designed to lure users to malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://animaleyeconsultantsd.com/uploads/1/3/0/3/130379272/bojupoletuv_rugiw_xavuxudi.pdf
    • http://ul-net24.ru/uploads/2020/01/29/lipowibesosunogutef.pdf
    • http://decgallery.com/uploads/1/3/0/4/130436234/dokomimevub-vorapilokezin-zukisof-wovis.pdf
    • http://ethreemotors.com/uploads/1/3/0/6/130639534/3244f5629.pdf
    • http://reamerdentistry.com/uploads/1/3/0/4/130488244/9221237.pdf
    • http://theelfbox.com/uploads/1/3/0/4/130436258/130436258.html#android+wear+updating+forever

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001105.bin
2416b8c283be56d8d4d1a9ef59f0f4ac741973eb40de513ebdd791e7a3310d98		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1105 8504 bytes

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