Malicious PDF — malware analysis report

Static analysis result for SHA-256 f80190ed7248e1b5…

MALICIOUS

PDF

41.0 KB Created: 2020-03-11 03:50:53 +02:00 Authoring application: wkhtmltopdf 0.12.1.4 (via Qt 4.8.6)
MD5: 4d0ba241444cd89a88aca06731f4b0cb SHA-1: 0f94ea8a46d768b5389157120fc724874c802c9b SHA-256: f80190ed7248e1b57e59b4e81e553be7273f1c9324c361858194e0a203b0514c
62 Risk Score

Malware Insights

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

The PDF document contains a large number of external links, many of which are numerically or generically named, suggesting a link farm for SEO poisoning. The document body text, though partially corrupted, includes the phrase 'sample promissory note for loans to family' and the URL 'http://hotelvic-phase2-ja.devsite-1.com/uploads/1/3/0/6/130620756/130620756.html#sample+promissory+note+for+loans+to+family', indicating a lure to a potentially malicious site. The heuristic 'PDF_SEO_LINK_FARM' confirms the presence of numerous external PDF links.

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://hotelvic-phase2-ja.devsite-1.com/uploads/1/3/0/6/130620756/130620756.html#sample+promissory+note+for+loans+to+family
    • http://myssatraining.com/uploads/1/3/0/6/130605228/4875047.pdf
    • http://www.rakemartinez.com/uploads/1/3/0/6/130604065/375ce0cad0a4a1.pdf
    • http://beagleboxer.com/uploads/1/3/0/4/130478975/rifanajanat.pdf
    • http://mail.baitem907.com/uploads/1/3/0/6/130605406/buwusasamajebugerute.pdf
    • http://www.coconutonline.co.uk/uploads/1/3/0/9/130969899/gowaradud.pdf
    • http://sportinggoodsplusmore.org/uploads/1/3/0/4/130483759/tomunukapub.pdf
    • http://carstenwalker.com/uploads/1/3/0/6/130620230/2666470.pdf
    • http://carolinelsmith.com/uploads/1/3/0/2/130272424/kebekogikogefem.pdf
    • http://big-intl.com/uploads/1/3/0/9/130969725/990569.pdf
    • http://seisshk.com/uploads/1/3/0/6/130621950/vofif-bukipus.pdf
    • http://pressureloop.com/uploads/1/3/0/4/130489081/7842092.pdf
    • http://millennialcruisers.com/uploads/1/3/0/5/130541077/f8496a784c0f1.pdf
    • http://nuvisionabroad.com/uploads/1/3/0/5/130588503/pavutasarused-fanepatava.pdf
    • http://www.backbaycbt.com/uploads/1/3/0/2/130270897/gobunapev_tepuwuludelofi_vatow.pdf
    • http://saywhatulike.com/uploads/1/3/0/4/130488700/dawiwuxowimimu.pdf
    • http://vivygirl-designs.com/uploads/1/3/0/2/130288320/bifituregusazod.pdf
    • http://forum.purpleparadiseresort.com/uploads/1/3/0/6/130639904/suzusep.pdf
    • http://hostmaster.bensondrivescotland.com/uploads/1/3/0/6/130604605/sakawojogefetozux.pdf
    • http://microsoftecare.com/uploads/1/3/0/7/130775939/limizopimemibofase.pdf
    • http://rpglayout.com/uploads/1/3/0/4/130479435/muwasekewovujim.pdf
    • http://etomolagi.com/uploads/1/3/0/7/130738548/lapopesove.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 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000076dd.bin
29ddaa661196ae0a3a82f690cac95569a275a38f449ccca3b438bce0deabe94c		 pdf-font-stream PDF embedded font (sfnt) at offset 0x76DD 8148 bytes

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