Malicious PDF — malware analysis report

Static analysis result for SHA-256 f10da59286087da7…

MALICIOUS

PDF

34.1 KB Authoring application: PDF Studio
MD5: 25d80a97013889a3d5110032a1474fa8 SHA-1: b70f686d9e359aa3b6d8992eacec524763da3bc2 SHA-256: f10da59286087da77beae389a4c9c214c11ab0a728aed609d1db748873e1054a
152 Risk Score

Malware Insights

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

The PDF file was flagged by ClamAV as Pdf.Phishing.TtraffRobotInstall-7605656-0 and a machine learning classifier. The primary indicator of maliciousness is the presence of a large number of embedded URLs pointing to external PDF files, suggesting a link farm or traffic redirection scheme. The document body contains garbled text and some seemingly legitimate pregnancy-related text, likely a lure to disguise the malicious intent.

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://mobilebillboardsredwoodcity.com/uploads/1/3/0/2/130287296/sujaze.pdf
    • http://www.paigeandelaine.com/uploads/1/3/0/8/130874608/bugiwesem-vumijunilira-xizawovujuwu.pdf
    • http://mido4design.com/uploads/1/3/0/2/130289694/24e53441.pdf
    • http://arthappeningbridgewater.ca/uploads/1/3/0/4/130436339/tebubepuvigataxubexu.pdf
    • http://my-auto-accessories.com/uploads/1/3/0/9/130969599/7849450.pdf
    • http://shopkashkoutureko.com/uploads/1/3/0/7/130775939/nazozus_sevivuzo_pizum_wexorod.pdf
    • http://onlinemobiletrainer.com/uploads/1/3/0/4/130491179/rekum.pdf
    • http://mta-sts.contracostachristianschools.org/uploads/1/3/0/5/130588503/jenuf.pdf
    • http://daveict.com/uploads/1/3/0/7/130739363/vefeduzino.pdf
    • http://threetwodesign.com/uploads/1/3/0/4/130483515/e39d5b7c321.pdf
    • http://lbiwinefest.com/uploads/1/3/0/6/130605505/4227354.pdf
    • http://bestgeekdeals.com/uploads/1/3/0/7/130775911/60a3074.pdf
    • http://host75.carmichaelnl.com/uploads/1/3/0/4/130483772/130483772.html#stomach+pain+after+eating+third+trimester

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003015.bin
46f6a2b28ea5946713455d44322169922bd1cc716944ed403ffef093614b57b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3015 6848 bytes

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