Malicious PDF — malware analysis report

Static analysis result for SHA-256 98fb3ac784b96ba0…

MALICIOUS

PDF

36.0 KB Authoring application: PDFBox
MD5: ae13282a2d2c03fd0720ffcaecf9915d SHA-1: 4982dfe67daba1e55db489074d20eeedb1df81bf SHA-256: 98fb3ac784b96ba0a0e2b55ad58017fe8e1e1bb7efd0cb1957982d2eded891ff
150 Risk Score

Malware Insights

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

The PDF file contains a large number of embedded external links, as indicated by the PDF_SEO_LINK_FARM heuristic. These links point to various PDF files hosted on different domains, suggesting a coordinated effort to distribute malicious content or engage in SEO-based phishing. The ML classifier and ClamAV detection further support the malicious nature of this file, with ClamAV identifying it as Pdf.Phishing.TtraffRobotInstall-7605656-0.

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://301southdallas.com/uploads/1/3/0/4/130483811/zizijukomufem.pdf
    • http://muscleegg.net/uploads/1/3/0/2/130287737/viwisowoketiwomo.pdf
    • http://www.krajina-2000.cz/uploads/1/3/0/6/130605078/5500795.pdf
    • http://mrglows.com/uploads/1/3/0/6/130640141/3e697a95a.pdf
    • http://markrharris.com/uploads/1/3/0/5/130551176/0481e7.pdf
    • http://newtouchstone.com/uploads/1/3/0/8/130874329/f2d5fcfaef3c.pdf
    • http://nanacarrie.com/uploads/1/3/0/4/130489523/nafuxumazokipufoke.pdf
    • http://msmagnosjcs.com/uploads/1/3/0/6/130604948/efd0436eaf50.pdf
    • http://eclecticinnatehealing.com/uploads/1/3/0/7/130776122/7764003.pdf
    • http://thegypsyjourney.com/uploads/1/3/0/8/130814065/vupamu-lixubura-dokuduwi-sobuwotipug.pdf
    • http://www.mrsjcowhy.com/uploads/1/3/0/7/130776211/rixigudaxur.pdf
    • http://childrenslessons.org/uploads/1/3/0/6/130639021/4839964.pdf
    • http://mealkitmama.com/uploads/1/3/0/5/130588787/zexejiraweneg.pdf
    • http://dmrcvss.co.uk/uploads/1/3/0/4/130488469/wofagawemukete.pdf
    • http://www.cre8festival.org/uploads/1/3/0/5/130538939/bc563.pdf
    • http://deardoc.org/uploads/1/3/0/7/130776228/2ec8ef82aef4d9.pdf
    • http://victorehikhamenor.com/uploads/1/3/0/5/130588390/a8a35e3d.pdf
    • http://baynotnhac.com/uploads/1/3/0/8/130813571/43e2c57d0d8.pdf
    • http://alexandriafamilymartialarts.com/uploads/1/3/0/7/130776801/xokonekoninosovosi.pdf
    • http://survey.rodhillportraits.com/uploads/1/3/0/3/130379098/130379098.html#downloadable+printable+potluck+sign+up+sheet

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003062.bin
ee0f4cc2a08cffe7f05a2bd170c227f6920ce82f41a05a432270b2f79e70301d		 pdf-font-stream PDF embedded font (sfnt) at offset 0x3062 7180 bytes

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