Malicious PDF — malware analysis report

Static analysis result for SHA-256 7136767a9e9b542a…

MALICIOUS

PDF

35.5 KB Created: 2018-06-11 08:17:39 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7)
MD5: 6b3ca98158ee7a56d0613cfb81fa9247 SHA-1: 5283bfcaae672bcb714ca2aa2a55e53e5a6a0682 SHA-256: 7136767a9e9b542a207ae8d90e5245bb8d2d6b7d1c0ad7c233e29468e6b786d2
102 Risk Score

Malware Insights

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

The PDF file contains heuristics indicating it is a fake 'free download' SEO-poisoning document. It embeds URLs that mimic search results, directing users to download a PDF file from a suspicious domain. The document body also contains these URLs, reinforcing the lure. No scripts were extracted, but the primary attack pattern is a malicious link disguised as a legitimate download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8955

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=suzuki-power-steering-wiring-diagram.pdf
    • http://uncpbisdegree.com/download4.php?q=suzuki-power-steering-wiring-diagram.pdf
    • http://apexi-usa.com/manuals/electronics/neo_diagram.pdf
    • http://www.autorepairmanuals.biz/product/SK29863
    • http://metroxfi.com/2008/11/geo-metro-and-suzuki-swift-wiring-diagrams/
    • http://www.apexi.co.jp/pdf/products/rsm_wiring_e.pdf
    • http://www.taesk.com/2008/2008-chevy-equinox-fuse-box-diagram
    • http://www2.izook.com/?page_id=204
    • http://www2.izook.com/?page_id=1455
    • http://www.instant-manual.com/1985-2010_Suzuki_ATV___Quad_Service_Manuals.html
    • http://www.myronsmopeds.com/category/service/electrical-and-wiring/wiring-diagrams/
    • http://www.suzukiswift.info/how-to-remove-the-cd-player-stereo-from-a-suzuki-swift/
    • http://www.autogenius.info/chevrolet-silverado-mk1-first-generation-1999-2007-fuse-box-diagram/
    • http://www.autogenius.info/volkswagen-transporter-t5-essentials-from-september-2009-fuse-box-diagram/
    • http://www.motorcycleanchor.com/katana/katana_tree.html
    • http://www.instant-manual.com/Download_Marine_Engine_Service_Manuals_By_Brand.html
    • https://www.rvupgradestore.com/Lippert-Hydraulic-Pump-p/014-141111.htm
    • https://www.themanualstore.com/John-Deere-38T-Lawn-Sweeper-Manuals-s/33016.htm
    • http://riverside-resort.net/1/shades-of-simon-gray-joyce-mcdonald.pdf
    • http://riverside-resort.net/1/sharp-aquos-32-inch-tv-manual.pdf
    • http://riverside-resort.net/1/the-statistical-analysis-of-recurrent-events.pdf
    • http://riverside-resort.net/1/treating-personality-disorders-in-children-and-adolescents-a-relational-approach.pdf
    • http://riverside-resort.net/1/swamp-gas.pdf
    • http://riverside-resort.net/1/the-dress-everyday-magic-1-sophie-nicholls.pdf
    • http://riverside-resort.net/1/the-poky-little-puppy-janette-sebring-lowrey.pdf
    • http://riverside-resort.net/1/the-little-book-on-family-humour.pdf
    • http://riverside-resort.net/1/the-savage-god-a-study-of-suicide-alvarez.pdf
    • http://riverside-resort.net/1/technology-and-modern-life-chapter-26.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://www.manualslib.com/manual/826775/Suzuki-Gsf1250.html
    • https://www.manualslib.com/brand/suzuki/
    • https://www.manualslib.com/brand/suzuki/motorcycle.html
    • https://www.manualslib.com/products/Suzuki-Gsf1250-3601487.html
    • https://www.manualslib.com/manual/1066069/Suzuki-Engine-2002-Grand-Vitara-Sq420.html
    • https://www.manualslib.com/brand/suzuki/engine.html
    • https://www.manualslib.com/products/Suzuki-Engine-2002-Grand-Vitara-Sq420-4089111.html
    • https://www.etrailer.com/Wiring/Tekonsha/119179KIT.html
    • 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
    • http://go.microsoft.com/fwlink/?LinkID=617297
    • https://fedoraproject.org/wiki/Licensing/LiberationFontLicense

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004dc6.bin
578bf1a4410966e71db164edeebba96f6818223b337b154de15a0ca46fe76328
pdf-font-stream PDF embedded font (sfnt) at offset 0x4DC6 10588 bytes
font_01_sfnt_off00006f4a.bin
028733956b054d6193dbe6bbaba398fc931199862ca1af925387042688171ea2
pdf-font-stream PDF embedded font (sfnt) at offset 0x6F4A 7268 bytes