Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab39838a9677c94d…

MALICIOUS

PDF

37.8 KB Authoring application: PDFBox
MD5: ce39a9d271479f7daa072e97d54bad8c SHA-1: 2ffa9fd18d3261e853aa0053a58df89fe8e0c25d SHA-256: ab39838a9677c94dab1028747a06124cc33836411d5779f07293d4141554e729
150 Risk Score

Malware Insights

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

The PDF was flagged by multiple heuristics, including ClamAV and an ML classifier, as malicious. The PDF contains a large number of embedded URLs, identified as a link farm, with the primary host being sceneguide.net. The document body, though heavily corrupted, contains references to the URLs and mentions 'Aceite de romero para el pelo beneficios', suggesting a lure to a potentially malicious website.

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://sceneguide.net/uploads/1/3/0/7/130739076/3129666.pdf
    • http://70008922.nhd.weebly.com/uploads/1/3/0/2/130289723/2597507.pdf
    • http://mspistone.com/uploads/1/3/0/2/130289265/9763416.pdf
    • http://xgens.org/uploads/1/3/0/4/130476390/gufurataxuxorebebi.pdf
    • http://bbytransienthouse.com/uploads/1/3/0/4/130489649/4363382.pdf
    • http://sumon.sladenec.ru/uploads/2020/01/28/jatopogobagidem.pdf
    • http://northwichgoldandsilver.co.uk/uploads/1/3/0/2/130289658/77c57.pdf
    • http://specwellness.com/uploads/1/3/0/3/130312986/b5eda6dc8aa.pdf
    • http://scireinke.com/uploads/1/3/0/5/130543588/130543588.html#aceite+de+romero+para+el+pelo+beneficios

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000113a.bin
ee0b01de2a2ca363e43f62e91848371febaa414c52c6c34d31365d67d0090fda		 pdf-font-stream PDF embedded font (sfnt) at offset 0x113A 8344 bytes

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