Malicious PDF — malware analysis report

Static analysis result for SHA-256 7d7456edf326a0d2…

MALICIOUS

PDF

76.4 KB Authoring application: Pdftk
MD5: f53cf0389411fc8933b7d8f4e8ca0e94 SHA-1: 4a51b76897a955de10e4d75e8972dc5b9d3b405f SHA-256: 7d7456edf326a0d2a3419f8eefe117d710d2c3ca33abdb78b050df1a9b845988
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.002 Spearphishing Attachment T1059.001 PowerShell

The PDF contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a link farm or redirection scheme. ClamAV detected this as Pdf.Phishing.TtraffRobotInstall, and an ML classifier also flagged it as malicious. The embedded URLs are the primary indicators of compromise, likely serving as entry points to further malicious activity or SEO manipulation.

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 https://jilobogun.weebly.com/uploads/1/3/0/4/130436121/gibaxifunemirubono.pdf
    • https://xineluvapi.weebly.com/uploads/1/3/0/5/130540065/3991025.pdf
    • http://trinitywinchestertn.org/uploads/1/3/0/4/130483741/dinivarasakij.pdf
    • https://wuralijotiraw.weebly.com/uploads/1/3/0/6/130604605/muremise.pdf
    • http://netuwij.find-me-2019.com/uploads/2020/01/29/445b8.pdf
    • http://leadingchristianity.com/uploads/1/3/0/5/130588885/webotifomivod-segagasisato-gukixefiwodoz-puremugaxa.pdf
    • http://bukawuzewo.tovarug.icu/uploads/2020/01/28/senarejaravelemano.pdf
    • http://tug.omalus.com/uploads/2020/01/28/muvujubovev-wonakemido-jinesa.pdf
    • http://bschealthcare.com/uploads/1/3/0/6/130621426/xaxolepopaxuropek.pdf
    • http://nuzzinetwork.com/uploads/1/3/0/4/130435820/909fdf39ed226.pdf
    • http://blog4girlsweebly.com/uploads/1/3/0/5/130589122/130589122.html#quest%C3%B5es+discursivas+sobre+revolu%C3%A7%C3%A3o

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001419.bin
8114c620ae04a5ce716eea2b30d99c93b3d88afa2fb2d70b55e78a708def14f3		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1419 11100 bytes
font_01_sfnt_off000052a1.bin
5d7ebd720715cd86529581f1d40cc643f68465477bd430d4be5ff736bc95f798		 pdf-font-stream PDF embedded font (sfnt) at offset 0x52A1 16268 bytes

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