Malicious PDF — malware analysis report

Static analysis result for SHA-256 047947eb604abf7f…

MALICIOUS

PDF

33.3 KB Created: 2018-06-11 08:27:17 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7)
MD5: 8140ade8cd352ad114f4afbecd057de2 SHA-1: eca8716e7d393ff22e092e8893ff963bc55953d1 SHA-256: 047947eb604abf7f31163be7a1398abd315bdd88095123e1efdb1837c6e73763
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 download lure, specifically targeting users searching for a 'vw golf mk1 haynes' manual. The document body and extracted URLs point to a malicious domain, uncpbisdpisdegree.com, which hosts the purported download. This suggests a phishing attempt to trick users into downloading a malicious file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8778

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=vw-golf-mk1-haynes.pdf
    • http://uncpbisdegree.com/download4.php?q=vw-golf-mk1-haynes.pdf
    • http://volkswagenownersclub.com/vw/showthread.php/26779-Disconnecting-battery-dire-consequences
    • https://www.autostyle.co.za/rubber-mudflaps-to-fit-vw-golf-mk7-set-of-4.html
    • http://www.oldclassiccar.co.uk/freeads_make/vw.htm
    • https://www.autostyle.co.za/gel-mag-decal-24654.html
    • http://www.volkswagenclub.net/model/vw-volkswagen-golf-12
    • http://www.volkswagenforum.co.uk/showthread.php?t=11467
    • http://uk-mkivs.net/topic/2672-clutch-pedal-swap-out-repair/
    • http://uk-mkivs.net/forum/50-diy-guides-and-how-to-instructions/
    • http://www.clubdediagramas.com/archivo/autos-a12/
    • http://uk-mkivs.net/topic/50427-pd-vac-line-simplification-n18-n239-valve-delete/
    • http://www.motoringbox.com/search-index/
    • https://suomenbrittifordkerho.net/markkinavoimat.php
    • http://riverside-resort.net/1/winter-at-valley-forge-facts.pdf
    • http://uncpbisdegree.com/1/the-battle-of-berlin-summary.pdf
    • http://uncpbisdegree.com/1/the-cubies-abc.pdf
    • http://riverside-resort.net/1/waece-answer-for-mathematics.pdf
    • http://riverside-resort.net/1/unleash-your-true-potential-diviniti-diviniti-diviniti-divinity.pdf
    • http://riverside-resort.net/1/your-office-microsoft-excel-comprehensive.pdf
    • http://riverside-resort.net/1/wind-power-poems.pdf
    • http://uncpbisdegree.com/1/southern-silk-road-in-the-footsteps-of-sir-aurel-stein-and-sven-hedin.pdf
    • http://uncpbisdegree.com/1/student-electromagnetic-fields-gizmo-answer-key.pdf
    • http://uncpbisdegree.com/1/sony-home-safety-product-user-manual.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://www.gumtree.com/p/volkswagen/-superb-2009-new-shape-vw-golf-2.0-tdi-s-timing-belt-done.-low-miles-76k-/1279084308
    • https://www.gumtree.co.za/s-mazda+323/page-6/v1q0p6
    • https://pl.wikipedia.org/wiki/Volkswagen_Garbus
    • http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=PL_EN&a=https%3a%2f%2fpl.wikipedia.org%2fwiki%2fVolkswagen_Garbus
    • https://www.scribd.com/document/159031141/Astra-Fault-Codes
    • https://en.wikipedia.org/wiki/Mini
    • 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_off000047c7.bin
91c06d31d9dbd240456a448c52af52d960db8f6457e2d35300db9db0dc9a51d1
pdf-font-stream PDF embedded font (sfnt) at offset 0x47C7 9736 bytes
font_01_sfnt_off000066f1.bin
971930767b7b834bf0ce2f277fbe32a145b0c4fc0a542250ee022ebdc3283171
pdf-font-stream PDF embedded font (sfnt) at offset 0x66F1 7136 bytes