Malicious PDF — malware analysis report

Static analysis result for SHA-256 05511220f267bbd3…

MALICIOUS

PDF

50.9 KB Authoring application: Pdftk
MD5: 062b16b4e46b9366dd7f53424dd785f5 SHA-1: 00a466d55fce9f3065057211c1398412f9aae1cb SHA-256: 05511220f267bbd3f7646074021f451b172f5e44f4e134a121da13d667ab9942
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 hosted on various domains. This behavior is indicative of a link farm or a distribution mechanism for further malicious content, as suggested by the ClamAV detection and ML classifier. The embedded URLs are likely intended to redirect users to potentially harmful sites or downloads.

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://misabeppa.com/uploads/1/3/0/6/130639370/pimamuxobevovadijafa.pdf
    • http://coldwatermusicschool.com/uploads/1/3/0/3/130313064/4cc84801aedf.pdf
    • http://dippedarmor.com/uploads/1/3/0/3/130313702/bacccddb9853c.pdf
    • http://aledger.net/uploads/1/3/0/6/130621636/cd6498a5b228.pdf
    • http://thestarchildmanifesto.com/uploads/1/3/0/4/130489230/xaxagizumalole.pdf
    • http://montanaterritorialalliance.org/uploads/1/3/0/6/130639534/da015e891e483ba.pdf
    • http://davesbackyardbees.com/uploads/1/3/0/5/130551251/f78072338.pdf
    • https://retebixu.weebly.com/uploads/1/3/0/5/130590142/b1e8aa919.pdf
    • http://neuroconference.org/uploads/1/3/0/5/130543665/jobesisejukokipafini.pdf
    • http://rwpdivephotography.com/uploads/1/3/0/6/130620923/javonur.pdf
    • http://derekjohnmulch.com/uploads/1/3/0/4/130476732/sawexiwim_votopiko_gewiwuniloles.pdf
    • http://rvrepairaustin.com/uploads/1/3/0/3/130379363/7522653.pdf
    • http://shavanoparktreeservice.com/uploads/1/3/0/3/130379173/6a703f5677.pdf
    • http://acumensalestrainingconsultants.com/uploads/1/3/0/6/130639906/130639906.html#lapond+vfd+manual
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00001398.bin
3ba48ef3d7f03b124c81d82542fa8a17fc02c68583a5c2f519561113a17d3740		 pdf-font-stream PDF embedded font (sfnt) at offset 0x1398 8784 bytes
font_01_sfnt_off00008141.bin
4de44934b2134461975519a2d0aa3d55dc6628cf3853ccad74187a90ab5f85e7		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8141 16060 bytes

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