Malicious PDF — malware analysis report

Static analysis result for SHA-256 7254e32900cfb688…

MALICIOUS

PDF

38.3 KB Authoring application: pdf-parser
MD5: 36ada1e15ec888efa1576b7a00c71f55 SHA-1: e4420cc7a68b78f5084db5230733fd165486b011 SHA-256: 7254e32900cfb6884f6f040658baf85816984963b90e89cf8c728bd102ef71d1
152 Risk Score

Malware Insights

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

The PDF contains a large number of embedded URLs, many of which point to other PDF files hosted on file-sharing services. The document body text attempts to lure the user by offering a 'free pdf' which is likely a pretext to encourage the download of malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent.

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 https://fepizenozed.weebly.com/uploads/1/3/0/5/130588653/lusaxopibez-wixufikozede-fajajipubo-xopibov.pdf
    • http://keeora.com/uploads/1/3/0/5/130539437/mudavobu-defupam-vuroxogu.pdf
    • http://acarroll-wallace.com/uploads/1/3/0/5/130590355/xizubutiroxibojupov.pdf
    • https://ramuvuloz.weebly.com/uploads/1/3/0/5/130589088/muzoviwerimuj.pdf
    • http://kuv.audiostart16.icu/uploads/2020/01/29/7277034.pdf
    • https://vezuxugadazob.weebly.com/uploads/1/3/0/2/130287283/7c3f6a7aec.pdf
    • http://vovuwafik.trikamethod.site/uploads/2020/01/28/muxelomivimemaza.pdf
    • https://sosuzemofevew.weebly.com/uploads/1/3/0/2/130272877/katubimonogusimozew.pdf
    • https://lozolirowob.weebly.com/uploads/1/3/0/5/130545241/miliguriv_nofanasop_ronume.pdf
    • http://traceydilley.com/uploads/1/3/0/5/130545185/130545185.html#science+reporter+magazine+free+pdf

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001271.bin
1d3e6e9aacdb242ccea8aa92b769785c141075cb0f8b8804c701ef90fd38405b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1271 8496 bytes

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