Malicious PDF — malware analysis report

Static analysis result for SHA-256 db72277ca375468c…

MALICIOUS

PDF

59.0 KB Authoring application: SWFTools
MD5: abcdf95b35e55e4f4149e177a5ddc8a4 SHA-1: 3fd18edcc51af8ed82b72d61c40d6b82a99f5ca0 SHA-256: db72277ca375468c6cda6e1181dac547805532aced5835efdded9c07b665ecb9
150 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a large number of embedded URLs pointing to external PDF files, a technique often used for SEO manipulation or to distribute further malicious content. The ClamAV detection and ML classifier strongly indicate malicious intent. The embedded URLs are the primary IOCs, suggesting a campaign focused on driving traffic to these external resources.

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://adoxian.com/uploads/1/3/0/6/130639045/wotipixas.pdf
    • http://sprintboot.com/uploads/1/3/0/5/130550716/belipivamafaf.pdf
    • http://bkcyouth.org/uploads/1/3/0/4/130489038/20f8b765e7bf05b.pdf
    • http://genmakers.com/uploads/1/3/0/6/130639856/6968031.pdf
    • http://kellyscgash.com/uploads/1/3/0/4/130435611/jalatumexivaxi.pdf
    • http://cluesescaperoom.com/uploads/1/3/0/2/130274091/a1b2e3c27f6809b.pdf
    • http://realorlando.net/uploads/1/3/0/7/130776760/6211772.pdf
    • http://nealybirthandlactation.com/uploads/1/3/0/3/130323709/nixipisune_pubapusim.pdf
    • http://merissawrites.com/uploads/1/3/0/2/130272347/depodogizapefitijal.pdf
    • http://desatascossantfeliudellobregat.com/uploads/1/3/0/6/130621063/4272666.pdf
    • http://nobuhotelmarbella.devsite-1.com/uploads/1/3/0/5/130588843/130588843.html#fifa+world+cup+2018+qualifiers+live+matches

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000014f8.bin
8e4a12a913b8908696534bee6f9b88f590ed67af11dc8409b243081a3d2ad06f		 pdf-font-stream PDF embedded font (sfnt) at offset 0x14F8 8960 bytes
font_01_sfnt_off0000ac55.bin
7863b829de04ea8b7f5be4d5dae43fa62182e7611f0c3a300d10b316d27db496		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAC55 2732 bytes

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