Malicious PDF — malware analysis report

Static analysis result for SHA-256 e22c077a952afb81…

MALICIOUS

PDF

48.3 KB Authoring application: PDFedit
MD5: f4324951e8cc502de3b4d49b19e015c4 SHA-1: be862fd08925671128f0cbeb58b7e2121cff9b6a SHA-256: e22c077a952afb81d45ce5980a5d1997272ffb66df5f12529a7901800c3d1752
150 Risk Score

Malware Insights

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

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. ClamAV also detected this as Pdf.Phishing.TtraffRobotInstall-7605656-0. The embedded URLs suggest a link farm or redirection scheme, likely intended to distribute further malicious content or lead users to phishing sites.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://woxuraxud.onemagazin-sveta.ru/uploads/2020/01/27/7563467.pdf
    • http://brendabrownrealestate.com/uploads/1/3/0/6/130604708/povidajeni-zinos.pdf
    • https://wasekozelenuko.weebly.com/uploads/1/3/0/5/130539583/7930d3e2ac15.pdf
    • http://bslg.ru/uploads/2020/01/27/zebivozilojiwotato.pdf
    • http://bupa.nakff.net/uploads/2020/01/27/625209.pdf
    • http://xadukon.pinapp.ru/uploads/2020/01/27/vuwerifameguvitene.pdf
    • http://magilladesign.com/uploads/1/3/0/2/130273978/b976a6d2f3.pdf
    • http://magneticmenuboards.us/uploads/1/3/0/2/130289577/6100954.pdf
    • http://greenwolfverticalfarm.com/uploads/1/3/0/6/130620929/130620929.html#endangered+animals+ppt

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011ab.bin
b983ff88fc0a56735c8415eba293a0ef749c83f22a363e77b3b7c28a3310a508		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11AB 8840 bytes
font_01_sfnt_off0000768a.bin
669a22844ddb84b64a1d93eb6147c2b8b7ca76f4316fe4be2bbf69c96252e72a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x768A 16180 bytes

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