Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff4c6e0faad20d0…

MALICIOUS

PDF

41.5 KB Authoring application: LibreOffice Draw
MD5: bb7bd9cbb94286443a3c8456e57fd971 SHA-1: 73e8f7d7b0a572c7e90f8db922d897f3d10784fe SHA-256: eff4c6e0faad20d031a94dada5a505c6a5653f86d7268318b6bb7d7041b587ce
150 Risk Score

Malware Insights

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

The PDF contains a large number of embedded links, identified by the PDF_SEO_LINK_FARM heuristic, suggesting a phishing or SEO manipulation attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though partially corrupted, mentions 'Curriculum vitae vs resume format', which could be a lure to encourage users to click the links.

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://missdayteaches.com/uploads/1/3/0/2/130289523/katulorasapo.pdf
    • http://oceanateyelevel.com/uploads/1/3/0/4/130478067/7ca8cb3.pdf
    • http://adrianleeproperty.com/uploads/1/3/0/5/130552016/5a21e21.pdf
    • http://momentcapture.net/uploads/1/3/0/4/130488626/depopagemedofov.pdf
    • http://michaelgiorgione.weebly.com/uploads/1/3/0/4/130483656/gobegerusiki.pdf
    • http://monsieurcoulibaly.com/uploads/1/3/0/5/130538880/fa67e2a.pdf
    • http://hamdenmusic.org/uploads/1/3/0/5/130550828/fomum.pdf
    • http://fishionista.com/uploads/1/3/0/5/130545800/lulilebi.pdf
    • http://cleaningclinic.shop/uploads/1/3/0/6/130639648/1454949.pdf
    • http://cfthomas.com/uploads/1/3/0/7/130740217/130740217.html#curriculum+vitae+vs+resume+format

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011f4.bin
06784824877c07ae5a2d51f29ebc6de99550d2701369204581d04a79d01f2fe1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11F4 8384 bytes

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