Malicious PDF — malware analysis report

Static analysis result for SHA-256 2f7f908e33df470c…

MALICIOUS

PDF

38.2 KB Authoring application: Scribus
MD5: bd4e59ed0bb4fceb301cf9a52523aa3b SHA-1: 0784be3ccfa0cefca87b295a6fff8cc1a05ccb6a SHA-256: 2f7f908e33df470c21545df756c027bfba7269e2c37563efbbd20cca5ee76b25
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The document body, though partially corrupted, mentions 'Pranayama yoga breathing exercises' which appears to be a lure to disguise the malicious link farm.

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://qusociologydepartment.com/uploads/1/3/0/6/130640182/geteru.pdf
    • http://naturehousedesign.com/uploads/1/3/0/5/130543285/wubesilafan.pdf
    • http://ninktat.com/uploads/1/3/0/6/130639424/duxalesowa.pdf
    • http://christianhartsough.com/uploads/1/3/0/5/130542934/37c746ee87.pdf
    • http://scottyvincent.net/uploads/1/3/0/7/130776252/cc8bc0.pdf
    • http://nycelitehealth.com/uploads/1/3/0/7/130738633/sawuv_femevojavofufe.pdf
    • http://cardbase.net/uploads/1/3/0/3/130323761/a6b6a66cf1d9.pdf
    • http://bisconsulting.it/uploads/1/3/0/5/130552016/depilike.pdf
    • http://adoptme.info/uploads/1/3/0/5/130551362/130551362.html#pranayama+yoga+breathing+exercises

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001174.bin
03ddb7177c10a2026bc00f1d23dc382a2d693885822de87d69bbabf19ce87114		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1174 8016 bytes

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