Malicious PDF — malware analysis report

Static analysis result for SHA-256 067451ec0c3153c6…

MALICIOUS

PDF

43.4 KB Authoring application: Mobipocket Creator
MD5: e785fbc9cd865794fe44ca3373bef1ca SHA-1: 98cc16fc7c3e75cdf3f8d36760f0bdf39c539d3c SHA-256: 067451ec0c3153c610890480501b9a24a19cc077c623594d3ac14bf562601d0b
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF file contains a large number of embedded external links, identified by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a link farm or a distribution mechanism for further malicious content. The ML classifier and ClamAV also flagged this file as malicious, reinforcing the assessment of a phishing or malware distribution attempt.

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://surveymyyacht.com/uploads/1/3/0/5/130590689/bb4e2.pdf
    • http://brdpllc.com/uploads/1/3/0/3/130324203/dozefi.pdf
    • http://youngatheartdesigns.com/uploads/1/3/0/6/130620970/c0892c7.pdf
    • http://www.greenhouse.co.za/uploads/1/3/0/8/130814984/sifaxomu.pdf
    • http://stlshrinerslimbreconstruction.com/uploads/1/3/0/2/130271250/fopopamuti-vexugusoz-dofedod-widojopezefodax.pdf
    • http://adammarkeckman.com/uploads/1/3/0/8/130874409/62ec7.pdf
    • http://novayeastlabs.com/uploads/1/3/0/6/130639733/5436398.pdf
    • http://timyang.com/uploads/1/3/0/5/130539637/8966902.pdf
    • http://mindfulnesslab.centre4innovation.org/uploads/1/3/0/7/130776492/50d999e8.pdf
    • http://misemeli.com/uploads/1/3/0/7/130775513/venotiwul-vijewonibadiz-zujozaxobagimu.pdf
    • http://thecreativechecklist.com/uploads/1/3/0/7/130776255/7b70dc3cff58.pdf
    • http://www.pjscoupons.com/uploads/1/3/0/5/130588195/pobil.pdf
    • http://thesustainables.net/uploads/1/3/0/2/130289335/31d105.pdf
    • http://pianotunerlosangeles.com/uploads/1/3/0/2/130287845/d94e24ebc7ea.pdf
    • http://n122ld.com/uploads/1/3/0/3/130323213/mokivumelov.pdf
    • http://orsalus.net/uploads/1/3/0/3/130379610/3982626.pdf
    • http://casahabana56.com/uploads/1/3/0/5/130588787/sunokujasoxenubafa.pdf
    • http://deboraholmes-aspiritmessage.com/uploads/1/3/0/7/130775275/zoxilude_wilirino_tipisevaduxam_nugunabavoko.pdf
    • http://carmarelpaso.net/uploads/1/3/0/6/130640021/nasoror.pdf
    • http://cateringlisting.com/uploads/1/3/0/6/130640197/1920138.pdf
    • http://gq0j8.bpmtc.com/uploads/1/3/0/3/130379101/130379101.html#sacramentos+de+iniciaci%C3%B3n+cristiana+catecismo
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003d94.bin
78116880e9c902c31767bfa12a9ff84ada309181a52ab1aa29cdf6fbfe115b45		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3D94 2600 bytes
font_01_sfnt_off00004989.bin
fbdf79286fcdba65fdccf77fd0728c39a00e6d173bd4788336f907319e138ba6		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4989 8888 bytes

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