Malicious PDF — malware analysis report

Static analysis result for SHA-256 14a98f8a48e523cf…

MALICIOUS

PDF

52.3 KB Authoring application: OpenOffice.org
MD5: a71db9b669f67cc7294b699df0e3e33b SHA-1: 2a804805fc38bf22a81156cb403f918d75d993c6 SHA-256: 14a98f8a48e523cf506e584ea2f29dec7592ef6ddd58032aedcfe5e8fb4aecf1
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains a large number of embedded external links, a technique often used for SEO manipulation or to redirect users to malicious sites. The ClamAV detection and ML classifier strongly indicate malicious intent, specifically identified as phishing. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a phishing or link-farming attack.

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://myveganstation.com/uploads/1/3/0/6/130639413/3529758.pdf
    • http://mystparanormal.com/uploads/1/3/0/5/130590583/ae372c.pdf
    • http://bcreativedesignandservices.com/uploads/1/3/0/4/130483478/tewar.pdf
    • http://scrummages.com/uploads/1/3/0/2/130289436/7737493.pdf
    • http://lubbockministry.com/uploads/1/3/0/6/130640061/f8d3a2.pdf
    • http://swboffice.com/uploads/1/3/0/4/130483232/1f117f80b.pdf
    • http://alangelfand.com/uploads/1/3/0/4/130476082/gixesa.pdf
    • http://la-screenranter.com/uploads/1/3/0/5/130551777/8fedef27.pdf
    • http://okrecyclingsolutions.com/uploads/1/3/0/5/130590548/xuxawuf_rudulizineme.pdf
    • http://nuohotel-zh.devsite-1.com/uploads/1/3/0/7/130740211/130740211.html#metformin+850+mg+tablets+side+effects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000131e.bin
811c8d3cff5182b1634e74ceafd7792beb950d3a00016a2fbc95f4555e0bf5b9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x131E 8200 bytes

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