Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea14dd5f146f5ec0…

MALICIOUS

PDF

38.8 KB Authoring application: Soda PDF
MD5: 22a402ffa060decb2a2bb5decee5f21b SHA-1: e5934e0769f3efebab0a002929565f4438b7a84c SHA-256: ea14dd5f146f5ec0832e0d582c810042b27cab6286245eaeba300ed24ecfb148
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. The document body, though partially corrupted, contains text related to 'Medicines to treat alcohol withdrawal' and also lists several URLs. These URLs are likely part of a link farm designed to manipulate search engine rankings or redirect users to malicious sites. The ClamAV detection as 'Pdf.Phishing.TtraffRobotInstall-7605656-0' further supports a phishing or malicious redirection 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://misskaty.org/uploads/1/3/0/3/130323285/zezume.pdf
    • http://drgnwear.club/uploads/1/3/0/4/130488578/5b409.pdf
    • http://justinchamplin.com/uploads/1/3/0/4/130488308/ffe0d4a6fb9.pdf
    • http://dmnroundtable2020.com/uploads/1/3/0/6/130603823/madajaximagibar.pdf
    • http://dfholidays.weebly.com/uploads/1/3/0/2/130289723/vapesig.pdf
    • http://spectrumlifecare.net/uploads/1/3/0/2/130272390/direfifefi_suvagib_piwepinuzuziwoj.pdf
    • http://davidmarquesibanez.com/uploads/1/3/0/2/130270799/130270799.html#medicines+to+treat+alcohol+withdrawal

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000010f5.bin
7ac052816bf6cc1f65fae1231e9c3f785e22ad0def1acf051e79d87876b7b368		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F5 8400 bytes

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