Malicious PDF — malware analysis report

Static analysis result for SHA-256 f0392aa51f66ad3c…

MALICIOUS

PDF

44.7 KB Created: 2020-03-28 10:53:30 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 056031fe8cec43edf7fa1a60bfae2e5e SHA-1: 4ec940250bff5db49a6fc5ac20a042ae5af841ca SHA-256: f0392aa51f66ad3c29610c143d687b4d7133ebfe13a7a8827f82d806c59d1e6c
92 Risk Score

Malware Insights

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

The PDF file contains a large number of external links, identified by the 'PDF_SEO_LINK_FARM' heuristic. These links point to various domains, suggesting a link farm or a method to distribute malicious content across multiple sites. The ML classifier also strongly indicated maliciousness. No scripts were extracted, and the document body contained only metadata and garbled text, providing no further clues about the specific lure.

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://bemscanning.com/uploads/1/3/0/6/130604812/130604812.html#espacio+muestral+del+lanzamiento+de+3+monedas
    • http://digitalsqueak.com/uploads/1/3/0/8/130873973/pumokasome.pdf
    • http://redrockmedicine.com/uploads/1/3/0/5/130551116/pusesepizebivojikula.pdf
    • http://autodiscover.dustibonge.org/uploads/1/3/0/6/130604036/60d41d6ea4eb.pdf
    • http://www.waterfordepiclocations.com/uploads/1/3/0/5/130539427/jukukuzoxumowepa.pdf
    • http://wellingtonyogawithpenina.com/uploads/1/3/0/5/130588346/e1c8e26d6da02d.pdf
    • http://mta-sts.mail.cpliofindiana.org/uploads/1/3/0/6/130621060/595978.pdf
    • http://italocanadianclubofforterieinc.com/uploads/1/3/1/3/131380120/jaxosunazaku.pdf
    • http://goingcoastalobx.com/uploads/1/3/0/4/130478975/3796193.pdf
    • http://cartermountainphoto.com/uploads/1/3/0/5/130539046/ridiwowirorisimegan.pdf
    • http://wearexg.com/uploads/1/3/0/4/130489933/f530368961.pdf
    • http://putothersfirst.net/uploads/1/3/0/5/130551137/vilenofowol.pdf
    • 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_off00006f6f.bin
736f111e2fe1fda03ac55c6e7a5d15f431952d6b1e9fc5f15dfc4ccb0c471110		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6F6F 8464 bytes
font_01_sfnt_off00008e94.bin
779aa567746046747dac965df7fdfb06ff632674a0a99ce247a327bf89f0fa63		 pdf-font-stream PDF embedded font (sfnt) at offset 0x8E94 16036 bytes

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