Malicious PDF — malware analysis report

Static analysis result for SHA-256 6fed9bc384f8358e…

MALICIOUS

PDF

37.7 KB Authoring application: pdf-parser
MD5: c91750cef3d7a9bbca67184db509ae46 SHA-1: 1140a0f7f2f1c2d86b105c46cbda52985e3daf7c SHA-256: 6fed9bc384f8358eba0fbba7b6ea68fdb001a8e9f5a9454316b2bea17018ba8d
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded links, identified as a link farm, pointing to other PDF files. This technique is often used to distribute malware or redirect users to phishing sites. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or malware distribution.

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://bolivarsynergy.com/uploads/1/3/0/5/130589047/fesexeb.pdf
    • http://wizo.dtrservice.it/uploads/2020/01/28/povewasuzixitepapib.pdf
    • http://fuerzaypoder.org/uploads/1/3/0/6/130603979/mowadodo.pdf
    • http://intraterrestrial.net/uploads/1/3/0/4/130489075/fubijotefov_sukubopazimere.pdf
    • http://justinchamplin.com/uploads/1/3/0/5/130543877/rixopimudoj.pdf
    • http://lakecountyrecovers.org/uploads/1/3/0/6/130621965/bdb2674a1f53d3a.pdf
    • https://poxavabapuf.weebly.com/uploads/1/3/0/4/130483902/laputusago_tudelekigu_xonubudabid.pdf
    • http://seanqiao.com/uploads/1/3/0/6/130605376/dodovesowa.pdf
    • http://basenji.nu/uploads/1/3/0/6/130604061/0a962.pdf
    • http://ne-surgerycenter.net/uploads/1/3/0/5/130590672/130590672.html#manual+inversor+allen+bradley+powerflex+4+portugues

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001224.bin
0928bb4abca236ca2d95f7127bfe92b7feee2c8521f0200a360aab3596ab5f6c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1224 8912 bytes

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