Malicious PDF — malware analysis report

Static analysis result for SHA-256 8b03b8f012626c40…

MALICIOUS

PDF

38.7 KB Authoring application: ImageMagick
MD5: 2e5fe27e47a283ee904855c9f45f0ad8 SHA-1: fa17d701deb08d00df11998e2e7c2aa4adcc6dc1 SHA-256: 8b03b8f012626c40208c6d1b8b879bd0ad7f8c6b9dd83744b5d02f9b6f8af2f3
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded URLs pointing to other PDF documents hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware distribution.

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://connectingcoffee.com/uploads/1/3/0/6/130621061/polew_zonazezurobapux_zalevavupag.pdf
    • http://pmc2u.com/uploads/1/3/0/2/130288520/3caaf0.pdf
    • http://elizabethgracepaperandpen.com/uploads/1/3/0/7/130738890/fobesu-wetalasonemox.pdf
    • http://noraleefashion.com/uploads/1/3/0/6/130604848/1030893.pdf
    • http://swankyfork.com/uploads/1/3/0/5/130589285/kosuledofosor.pdf
    • http://ecorutas2x2.com/uploads/2020/01/28/263991c.pdf
    • http://cuppagusto.com/uploads/1/3/0/2/130291975/6760543.pdf
    • http://premierbeachfl.com/uploads/1/3/0/6/130639098/dopigedijojurux_pezadoxawoziwon_newelegizujazum.pdf
    • http://questbusinesses.com/uploads/1/3/0/6/130622047/130622047.html#how+can+pneumonia+cause+pleural+effusion

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000011a9.bin
d25fefe634564b671ae7ae1a6da4347cdd03e42f8b82948235cb939a9f45adfd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11A9 7800 bytes

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