Malicious PDF — malware analysis report

Static analysis result for SHA-256 b67d7b5bf14373d5…

MALICIOUS

PDF

30.2 KB Authoring application: Karbon
MD5: 76992d5c9893c96dc7d4defd5f098213 SHA-1: 1af8c4dfdeed00d8ba48adc64526a4c9ab934550 SHA-256: b67d7b5bf14373d5a556bb7fb6a2fe13790028bc62e478233501300c99108391
120 Risk Score

Malware Insights

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

The PDF file exhibits a critical heuristic firing for a link farm, containing numerous embedded URLs. These URLs likely lead to malicious content or phishing pages, as indicated by the ClamAV detection of 'Pdf.Phishing.TtraffRobotInstall-7605656-0'. The document body, though partially corrupted, also contains several of these suspicious URLs. 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://mail.darkhorsegolf.com/uploads/1/3/0/8/130874530/7acb643.pdf
    • http://economicdevelopment.info/uploads/1/3/0/2/130271207/dizoxudidatot-fugedevopejimal-wakemavuzefez-fimosuteli.pdf
    • http://greencashcrytpocurrency.com/uploads/1/3/0/5/130543588/015182ffd908f.pdf
    • http://mta-sts.mx.the-churchofgod.org/uploads/1/3/0/6/130604144/fe16fbd.pdf
    • http://pourspoutequipment.net/uploads/1/3/0/5/130546657/xefog.pdf
    • http://gnshope.com/uploads/1/3/0/9/130969945/rejonu.pdf
    • http://piecesofmyheart2015.com/uploads/1/3/0/3/130323762/8899202.pdf
    • http://bigfreshcontrol.com/uploads/1/3/0/7/130775002/9036846.pdf
    • http://pandlexpressinc.com/uploads/1/3/0/6/130640097/vugomotus.pdf
    • http://actionhomerepair.com/uploads/1/3/0/5/130540193/7908609.pdf
    • http://www.peacefilledpathways.com/uploads/1/3/0/6/130620390/eb777998.pdf
    • http://returnoninitiative.us/uploads/1/3/0/2/130287882/rudezibexabaz.pdf
    • http://mail.yubeautylounge.com/uploads/1/3/0/2/130270873/e5c33cc.pdf
    • http://baomahuiyulechengkaihu.br3h.com/uploads/1/3/0/6/130620637/130620637.html#multiplication+and+division+word+problems+for+grade+2+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001eaa.bin
8771b4df6690d61731eb39b20d0a3a03c6487387d287e014d4964b919c6e63e5		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1EAA 7176 bytes

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