Malicious PDF — malware analysis report

Static analysis result for SHA-256 643ea245718b77bd…

MALICIOUS

PDF

47.0 KB Authoring application: pstoedit
MD5: df0496c482eae584fdca55920c06fd6a SHA-1: 69439ef5d376eaacf865041faa30905e277eda9b SHA-256: 643ea245718b77bd3b39aff6ff5d2e0c75f3ce260902d43e587e11d85e41a826
152 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics, including a critical alert for a link farm and ClamAV detection as phishing malware. The document body, though partially corrupted, contains text related to 'Juggernaut items of Nulgath guide', suggesting a lure. The embedded URLs point to a large number of external PDF files, indicating a likely attempt to distribute malicious content or engage in SEO spam. No scripts were extracted, but the structure suggests a malicious document delivery mechanism.

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://stonefoxfeather.com/uploads/1/3/0/6/130639892/bd1d397f379.pdf
    • http://nepservicesinc.com/uploads/1/3/0/3/130313069/6704909.pdf
    • http://papiramirez.com/uploads/1/3/0/4/130488542/gofevowumaxejasode.pdf
    • http://newbornumc.org/uploads/1/3/0/5/130589072/3977539.pdf
    • http://v-techsnc.com/uploads/1/3/0/5/130551457/ranexo.pdf
    • http://likesofliss.weebly.com/uploads/1/3/0/4/130435876/pafozotogumig.pdf
    • http://treeremovalbarrie.net/uploads/1/3/0/6/130604011/9138571.pdf
    • http://mycorporatecounselor.com/uploads/1/3/0/6/130639569/vebuxerabudekodofa.pdf
    • http://mmarieboutique.com/uploads/1/3/0/6/130605453/gopawexo-nexijexu-tedipaxo.pdf
    • http://multistreams.com/uploads/1/3/0/6/130639840/130639840.html#juggernaut+items+of+nulgath+guide
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001206.bin
3e3c8a118bdfadffa238fddd61d670ceb3c803687d917f1c49e3f2470cce5fd1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1206 8384 bytes
font_01_sfnt_off000068d7.bin
2d128dae615b612ec8771c57df1186444433e7fc722ba2ef8c0938e1fffeae92		 pdf-font-stream PDF embedded font (sfnt) at offset 0x68D7 16188 bytes
font_02_sfnt_off00007d9a.bin
3cf2e61d6a9a17d67058092f735344da68aafd773256a5c2a16702179a7e0181		 pdf-font-stream PDF embedded font (sfnt) at offset 0x7D9A 1764 bytes

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