Malicious PDF — malware analysis report

Static analysis result for SHA-256 50d126492e8270b2…

MALICIOUS

PDF

37.5 KB Authoring application: LibreOffice Draw
MD5: 4b4ae97d3d6a9e40dc40adc815d265ed SHA-1: 48fd6d32638971f85bdf6f4bb84e74ac24960d01 SHA-256: 50d126492e8270b258e2257f8e2ffcfbbb6cc85aa26fec55354f4a67cf5fe805
120 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded links to external PDF documents hosted across various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the 'PDF_SEO_LINK_FARM' heuristic. The ClamAV detection 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious distribution intent. No scripts were extracted from this sample.

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://helpmedom.com/uploads/1/3/0/5/130539825/130437.pdf
    • http://ngpsychology.com/uploads/1/3/0/2/130270905/5528952.pdf
    • http://nederland-verzilvert.nl/uploads/1/3/0/5/130550901/9259554.pdf
    • http://mrncleaningservicescom.com/uploads/1/3/0/5/130589267/bubupigexolam_bozujilona.pdf
    • http://earthlyelementsart.madocrocks.com/uploads/1/3/0/4/130488851/volagamo_selajonunada_fegonato_kumijozeto.pdf
    • http://drjulescomin.com/uploads/1/3/0/9/130969597/8fe61f585.pdf
    • http://terrasustainable.com/uploads/1/3/0/7/130776715/8369464.pdf
    • http://beyondpotential.ca/uploads/1/3/0/8/130874408/pinodofix-xafefi-somugipose-wizovojojo.pdf
    • http://mannbrotherssolutions.com/uploads/1/3/0/4/130477420/7398015.pdf
    • http://thewardscottfiles.com/uploads/1/3/0/8/130813998/potuziduxemixamiz.pdf
    • http://bluhorizontravel.com/uploads/1/3/0/2/130287285/sitijakuzifapag-pukox-kukugifeje-refibalolesis.pdf
    • http://aaasteamandsauna.com/uploads/1/3/0/6/130639249/8a73aaf.pdf
    • http://skinspiritlife.com/uploads/1/3/0/4/130488584/130488584.html#training+need+assessment+survey

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003a3a.bin
45d93b478dc1595ac7d7b0fed11bc35239df2304811f3fd09b09fcbacc473af4		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3A3A 8048 bytes

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