Malicious PDF — malware analysis report

Static analysis result for SHA-256 d403c63922936107…

MALICIOUS

PDF

56.3 KB Created: 2020-06-20 01:47:43 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: b8d8cc796eee4a927596aef6342f4bca SHA-1: 41a9642bd116e619c3ba8740a2dfebd1eeb848e6 SHA-256: d403c639229361071066bb8f88513d8e3ac62032714c11c88255ae262c07763e
92 Risk Score

Malware Insights

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

The PDF document contains numerous external links, many of which point to other PDF files hosted on similar domains. The document body mentions 'Neverwinter pet guide', suggesting a lure to attract users to these external sites. The heuristic 'PDF_SEO_LINK_FARM' indicates a large number of external links, likely for SEO manipulation or to host malicious content. No scripts were extracted from this sample.

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.
  • 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://youcanbepregnant.com/uploads/1/3/0/6/130621470/130621470.html#neverwinter+pet+guide
    • http://mail.loscalifornianos.org/uploads/1/3/0/6/130604922/c7bc46953a.pdf
    • http://culturalminds.co.uk/uploads/1/3/0/7/130738792/liwajadojos.pdf
    • http://mystoryinalocket.com/uploads/1/3/0/4/130476722/66a92a96c8e.pdf
    • http://tucsongrouphomes.com/uploads/1/3/1/6/131636702/6174166.pdf
    • http://gselectric.org/uploads/1/3/1/3/131397940/ramepanemisevi_zunitukuziv_govovabajunijat_fizozapodamob.pdf
    • http://jardinesexecutivetravel.com/uploads/1/3/1/0/131070843/1017910.pdf
    • http://front-online.me/uploads/1/3/0/9/130969169/gixozolupigowiwuvabo.pdf
    • http://mecanbike.com/uploads/1/3/2/3/132302735/bb5b491a0f745.pdf
    • http://guaguitas.com/uploads/1/3/0/2/130272458/dakizajene.pdf
    • http://youbangtaobaowangwangqunfaruanjian.thesurge.cc/uploads/1/3/0/8/130874668/lujowunano-gojesolowusalit-riraluki-gaxedeton.pdf
    • http://autodiscover.dlak.co.ke/uploads/1/3/0/6/130604054/mixivagos-tulekoxorog-vonifalo-fewaweg.pdf
    • http://gselectric.org/uploads/1/3/1/3/13139
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • 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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00009d64.bin
40f69746366d319136408a5b558318eeceb6a6149f698448800b80d271b7c16a		 pdf-font-stream PDF embedded font (sfnt) at offset 0x9D64 4600 bytes
font_01_sfnt_off0000ad27.bin
4138975b0b2ad241952765d6dcf564870e727b58da55e3e188ba57e9a64daa84		 pdf-font-stream PDF embedded font (sfnt) at offset 0xAD27 11652 bytes

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