Malicious PDF — malware analysis report

Static analysis result for SHA-256 0763e640fd51fd77…

MALICIOUS

PDF

36.4 KB Created: 2018-06-11 10:02:43 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7)
MD5: 2e711317bd4abbb96e1f774987389bb4 SHA-1: 6756d061594609168fe22e23089039cce0524fca SHA-256: 0763e640fd51fd770aff20dc1bba9cb3b52f195e58068bcafe67ce689d984662
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious File

The PDF document employs SEO poisoning to trick users into downloading a fake 'Toyota service agreement refund' file. The primary gateway for this malicious download is the URL http://uncpbisdegree.com/download3.php?q=toyota-service-agreement-refund.pdf. This lure is designed to exploit user trust and prompt them to execute a potentially harmful file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9062

Heuristics 4

  • Fake 'free download' SEO-poisoning PDF critical PDF_SEO_FAKE_DOWNLOAD
    The ML classifier flagged this PDF AND it carries a visual download/call-to-action lure AND an off-domain server-side download-gateway link whose query string names a document payload. This three-signal conjunction is the fake-document / 'free PDF download' SEO-poisoning delivery pattern: the page is padded with benign decoy links to dilute classifier scores while funnelling the victim through the gateway to malware/scareware. Acting only on the conjunction keeps benign download-bearing PDFs from being misflagged.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://uncpbisdegree.com/download3.php?q=toyota-service-agreement-refund.pdf
    • http://uncpbisdegree.com/download4.php?q=toyota-service-agreement-refund.pdf
    • http://www.tundraheadquarters.com/blog/toyota-customer-service-complaints-make-your-voice-heard/
    • http://customercarecontacts.com/toyota-australia-contact-customer-service/
    • http://www.contactcustomerservicenow.com/contact-toyota-customer-service/
    • https://www.toyota.co.nz/-/legal-privacy-policy/
    • https://www.corporateofficeheadquarters.com/2012/05/toyota-usa-corporate-office.html
    • https://www.corporateofficeheadquarters.com/2012/05/toyota-corporate-office-headquarters.html
    • https://www.setf.com/customer-support/faqs
    • http://www.zeiglerfordesp.com/about/faqs.aspx
    • http://www.livenhraracing.com/
    • http://melbic.com/
    • http://riverside-resort.net/1/yamaha-6hp-2-stroke-outboard-repair-manual.pdf
    • http://uncpbisdegree.com/1/strategic-staffing-solutions-michigan.pdf
    • http://uncpbisdegree.com/1/take-up-your-mat-and-other-miracles-from-the-gospel-of-john-participant-amp.pdf
    • http://riverside-resort.net/1/up-arbi-farsi-board-scheme.pdf
    • http://uncpbisdegree.com/1/solutions-guide-for-data-at-rest-trusted-computing-group.pdf
    • http://uncpbisdegree.com/1/the-confession-inspector-ian-rutledge-14-charles-todd.pdf
    • http://riverside-resort.net/1/wilson-physics-lab-experiments-solutions.pdf
    • http://riverside-resort.net/1/water-cycle-cut-and-paste-2nd-grade.pdf
    • http://uncpbisdegree.com/1/surgical-anatomy-of-head-and-neck.pdf
    • http://uncpbisdegree.com/1/the-crucible-act-1-questions-and-answers.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://www.toyota.co.uk/finance-insurance/tfs-faqs
    • https://www.toyota.com.au/finance/faq
    • https://www.ebay.com.au/itm/Bonnet-Protector-Weathershields-For-Toyota-Prado-150-Series-Aug2013-Jul2017-/152073407502
    • http://www.ebay.com.au/sch/Car-Truck-Parts-/6030/i.html
    • http://www.ebay.com.au/sch/Exterior-/33637/i.html
    • http://www.ebay.com.au/sch/Bonnets-/33646/i.html
    • https://www.consumerreports.org/cars/toyota/prius/2010/reliability
    • https://www.tacomaworld.com/threads/i-am-beyond-fed-up-with-appalachian-toyota-roundup-atr.537901/
    • https://www.tacomaworld.com/forums/1st-gen-tacomas-1995-2004.4/
    • https://www.goodyear.com/en-US/tires/toyota/yaris
    • https://www.ebay.com.au/itm/Eng-Steady-RH-Engine-Mount-For-TOYOTA-Camry-MCV20R-MCV36R-1MZFE-Auto-Manual-/142731845858
    • http://www.ebay.com.au/sch/Engines-Components-/33612/i.html
    • http://www.ebay.com.au/sch/Motor-Mounts-/50454/i.html
    • https://en.wikipedia.org/wiki/Internal_Revenue_Service
    • https://www.ebay.ca/itm/EBBRO-1-24-TOYOTA-2000GT-Red-/332592355415
    • http://www.ebay.ca/sch/Cars-Trucks-Vans-/180273/i.html
    • http://www.ebay.ca/sch/Contemporary-Manufacture-/180506/i.html
    • https://www.vividseats.com/concerts/shania-twain-tickets/shania-twain-toyota-center-tx-6-9-2436629.html
    • https://www.vividseats.com/concerts/journey-tickets/journey-toyota-center-tx-9-3-2618285.html
    • https://www.tickpick.com/houston-rockets-tickets/
    • https://www.verizonwireless.com/support/equipment-protection-legal/
    • https://www.verizonwireless.com/support/insurance-and-equipment-protection/
    • http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409
    • http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409
    • https://go.microsoft.com/fwlink/?linkid=868922
    • http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409
    +2 more URL(s)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005192.bin
a110ea3d6b25d568635d34be9c9a4dc1243efe0b887e17c2a40f8066093fce1c
pdf-font-stream PDF embedded font (sfnt) at offset 0x5192 10444 bytes
font_01_sfnt_off000072bf.bin
a2bbdb2ecb41dba0a12370a072c0c6e90dda85a44c2c400de308f66dd0c142b5
pdf-font-stream PDF embedded font (sfnt) at offset 0x72BF 7172 bytes