Malicious PDF — malware analysis report

Static analysis result for SHA-256 95ba53639bafbffe…

MALICIOUS

PDF

30.6 KB Created: 2020-05-09 05:58:10 +03:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: b3b081cdbd21a7825f44b34a1dadc55b SHA-1: 69a6ae4634fe205fee8923321fb0121dba5ee9d3 SHA-256: 95ba53639bafbffe25e221372ea3717aa719a671256072c35484d974bca5dff1
92 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, identified by the PDF_SEO_LINK_FARM heuristic. The ML classifier also flagged this PDF as malicious with high confidence. The document body contains text related to sports injury reports, likely a lure to disguise the malicious intent of directing users to numerous unrelated websites.

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.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://irieint.com/uploads/1/3/0/6/130621006/130621006.html#houston+texans+injury+report+rotoworld
    • http://beyond-bookkeeping.com/uploads/1/3/0/2/130272254/rejutanavuxi.pdf
    • http://claireaycock.com/uploads/1/3/0/8/130874501/rezavoxuroguxazupe.pdf
    • http://familydentaloflittleton.com/uploads/1/3/1/6/131606597/4610d.pdf
    • http://mariajimenezart.com/uploads/1/3/0/6/130640208/supituwakurif_famum.pdf
    • http://gcheavenlycleaning.services/uploads/1/3/0/6/130605482/b30f84760bb6.pdf
    • http://kingfrozensrl.com/uploads/1/3/0/6/130621719/3974512.pdf
    • http://myrealbodyoga.com/uploads/1/3/0/4/130489351/dekon-milabalim-wutufudipedij.pdf
    • http://marlertowing.com/uploads/1/3/1/6/131637137/139599.pdf
    • http://drlisagoldman.com/uploads/1/3/0/4/130476513/julawi.pdf
    • http://uhurupads.com/uploads/1/3/1/3/131398598/boxafe.pdf
    • http://powmeet.se/uploads/1/3/0/3/130379082/lurox-zigoxumode.pdf
    • http://bettybiedermann.com/uploads/1/3/0/7/130776503/f90f5653816c2.pdf
    • http://tanver.org/uploads/1/3/0/3/130324047/sorefepubasu-jiselurud.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004e5e.bin
7b1f66077cfcc6323b28f9a9419be2a5990f4a479b3800dfce3d2b7ad0e25950		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4E5E 9968 bytes

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