Malicious PDF — malware analysis report

Static analysis result for SHA-256 60cd1cf8fa76eae6…

MALICIOUS

PDF

33.4 KB Created: 2018-06-11 08:34:49 -04:00 Authoring application: wkhtmltopdf 0.12.4 (via Qt 4.8.7)
MD5: 8b30642caf16627be204dadc90ebf186 SHA-1: a9b3e60959954b1393c77794d22a82cc5be4e257 SHA-256: 60cd1cf8fa76eae6b061f5cd8a9e72170c8ac7e37b3a210e9974d615034609dd
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document is identified as a fake 'free download' SEO-poisoning lure. It contains embedded URLs that redirect to a download page, likely serving a malicious payload. The document body, though partially garbled, includes search-related terms and the malicious URL, reinforcing the lure. No scripts were extracted, but the PDF structure and embedded URIs strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9123

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=torqueflite-904-repair-guide.pdf
    • http://uncpbisdegree.com/download4.php?q=torqueflite-904-repair-guide.pdf
    • https://www.allpar.com/mopar/torqueflite.html
    • http://www.hemiperformance.com.au/
    • http://imperialclub.com/Repair/Lit/Master/index.htm
    • http://www.makcotransmissionparts.com/A500.html
    • http://www.txchange.com/sk.htm
    • http://www.drivetrain.com/parts_catalog/overdrive_units/dodge_3_speed_automatic_trans..html
    • http://www.victorylibrary.com/mopar/Mopar-books.htm
    • http://www.1962to1965mopar.ornocar.com/restoration-sources.html
    • http://www.makcotransmissionparts.com/A518.html
    • http://imperialclub.org/classifieds/Imperials_For_Sale.html
    • https://ateupwithmotor.com/model-histories/amc-gremlin/
    • http://www.manciniracing.com/ind.html
    • http://uncpbisdegree.com/1/state-of-colorado-mental-health-jurisprudence.pdf
    • http://riverside-resort.net/1/wiring-diagrams-mazda-miata.pdf
    • http://uncpbisdegree.com/1/the-demons-change-book-five-of-the-forced-to-serve-series.pdf
    • http://uncpbisdegree.com/1/the-cosmic-perspective-the-solar-system-5th.pdf
    • http://riverside-resort.net/1/ustast-examination-information-bulletin-iccsafe-org.pdf
    • http://riverside-resort.net/1/video-card-buyers-guide-spring-2009.pdf
    • http://riverside-resort.net/1/wiring-diagram-civic-d15b.pdf
    • http://riverside-resort.net/1/zen-pool-awaken-the-master-within.pdf
    • http://uncpbisdegree.com/1/solution-of-mariam-and-kraige-chap-6.pdf
    • http://uncpbisdegree.com/1/tantra-a-v-gso-meg-rt-s-tilopa-tantrikus-nek-nek-a-mah-mudr-j-hoz-magyar-zata.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://en.wikipedia.org/wiki/TorqueFlite
    • https://www.autozone.com/shifter-and-shift-accessories/gear-shift-lever-components
    • https://www.autozone.com/performance
    • https://www.autozone.com/performance/shifter-and-shift-accessories
    • https://www.autozone.com/transmission-and-drive-train/transmission-oil-pan
    • https://www.autozone.com/performance/transmission-and-drive-train
    • http://www.multi.fi/aparts/f_priser.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_off000043df.bin
1130eb06f901c7c321f02b27d34f5b87948f77fb9a11e0a96e3cfa64e64a6403		 pdf-font-stream PDF embedded font (sfnt) at offset 0x43DF 10988 bytes
font_01_sfnt_off00006697.bin
c2d57e4d98038b0795a3da088e36d37fcb428186c15b5b202285c1658090bdb9		 pdf-font-stream PDF embedded font (sfnt) at offset 0x6697 7628 bytes

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