Malicious PDF — malware analysis report

Static analysis result for SHA-256 0df989dc15ba8217…

MALICIOUS

PDF

36.1 KB Authoring application: LibreOffice Draw
MD5: 8228cd6f9f7e6078321aa52c56c56598 SHA-1: 29e5844edb53755d2aaea598ad1cfdb822201bb8 SHA-256: 0df989dc15ba8217b639184617206157d6bcef4ce6cfd5e170cd7259d481e289
152 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a large number of embedded URLs pointing to other PDF files, a technique often used for SEO spam or to distribute malicious payloads. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a mechanism for redirecting users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

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://tillercapitalltd.com/uploads/1/3/0/7/130776827/108bd6db5c.pdf
    • http://namlems.org/uploads/1/3/0/4/130483673/mawajub.pdf
    • http://browndogcannabis.com/uploads/1/3/0/3/130313107/bipebir.pdf
    • http://worldforge.info/uploads/1/3/0/3/130323186/6e487f972f.pdf
    • http://www.stephenbrunson.com/uploads/1/3/0/7/130775396/e5d5d.pdf
    • http://www.swissological-skincare.com/uploads/1/3/0/6/130639335/3a96646.pdf
    • http://camillecharlyart.com/uploads/1/3/0/6/130603838/suwowubu.pdf
    • http://mhdodgebrawl.com/uploads/1/3/0/8/130813586/fokusuk.pdf
    • http://myabishai.net/uploads/1/3/0/5/130550693/videfepowidu.pdf
    • http://espaces.cz/uploads/1/3/0/7/130739742/ba7defc2b77a.pdf
    • http://poshgroom.com/uploads/1/3/0/7/130739772/nuziki.pdf
    • http://strappedleather.com/uploads/1/3/0/4/130483205/8689836.pdf
    • http://www.maiasouthers.com/uploads/1/3/0/5/130544009/1415843.pdf
    • http://jenandlusfoodnews.com/uploads/1/3/0/5/130544232/66323fea3e75aa.pdf
    • http://www.healingtouchenergy.com/uploads/1/3/0/6/130604201/3435780.pdf
    • http://fitluv.net/uploads/1/3/0/5/130539783/venideguxevijaba.pdf
    • http://nnetherland.com/uploads/1/3/0/5/130590403/fedenozer.pdf
    • http://amerineheatingandcooling.com/uploads/1/3/0/7/130776886/9409794.pdf
    • http://74-123-78-90.mgwnet.com/uploads/1/3/0/7/130739488/130739488.html#pip+install+invalid+syntax+python+3.7

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002faf.bin
b7c117606bae251b6bec3e3c10183bfdee037f1c49399fe02fb218eb67b7d58e		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2FAF 7892 bytes

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