MALICIOUS
130
Risk Score
Malware Insights
MITRE ATT&CK
T1059.001 PowerShell
The PDF file contains embedded URLs and a document body that mimics a technical diagram related to WABCO trailer air systems. The presence of a PDF_URI heuristic firing on 'http://uncpbisdegree.com/download3.php?q=wabco-trailer-air-diagram.pdf' strongly suggests this is a lure to download a secondary payload. The ML classifier also flagged this PDF as malicious. While no scripts were extracted, the combination of the lure and the ML detection indicates a high likelihood of a malicious download attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9297
Heuristics 4
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Fake 'free download' SEO-poisoning PDF critical PDF_SEO_FAKE_DOWNLOADThe 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.
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PDF carries a PHP-gateway SEO-spam PDF link farm medium PDF_SEO_PHP_GATEWAY_LINK_FARMPDF contains four or more clickable links whose target is a `.php` gateway with a multi-word search-PHRASE document slug embedded after it (e.g. 'index.php?.../binary+options+trading+nz.pdf' or 'pdf.php/cialis-dosage-side-effects.pdf'). Legitimate PHP-served documents use a filename or numeric id, not a search-query phrase, so this is the generated SEO link-farm shape — pharma / binary-options / 'free download' spam that ranks for queries and routes users into payload/redirect chains. The PDF itself carries no exploit — the risk is the linked destinations.
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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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Embedded URL info EMBEDDED_URLOne 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=wabco-trailer-air-diagram.pdf In PDF document text
- http://uncpbisdegree.com/download4.php?q=wabco-trailer-air-diagram.pdfIn PDF document text
- http://inform.wabco-auto.com/intl/pdf/815/00/34/8150100343.pdfIn PDF document text
- http://inform.wabco-auto.com/intl/en/informindex.php?action=filter&suchwort=&family=2047In PDF document text
- http://www.meritorwabco.com/MeritorWABCO_document/mm33.pdfIn PDF document text
- https://www.anythingtruck.com/category/htp-brake-air-dryers-ad9.htmlIn PDF document text
- http://www.meritorwabco.com/MeritorWABCO_document/TP08103.pdfIn PDF document text
- http://beamalarm.com/Documents/haldex_isolation_valve.htmlIn PDF document text
- http://www.autorepairmanuals.biz/product/SK29863In PDF document text
- https://www.allianceelectronics.co.uk/20/32/what-we-doIn PDF document text
- http://www.advantagetruckparts.com/freightliner-truck-parts/copy-of-cummins-isx-air-compressor/In PDF document text
- http://www.autorepairmanuals.biz/page/921779In PDF document text
- http://jujaitaly.net/In PDF document text
- http://uncpbisdegree.com/1/swapnalok-society-the-good-news-reporter.pdfIn PDF document text
- http://riverside-resort.net/1/volkswagen-workshop-manual-golf-1.pdfIn PDF document text
- http://uncpbisdegree.com/1/smith-and-nephew-total-hip-replacement.pdfIn PDF document text
- http://riverside-resort.net/1/vw-golf-mk4-gti-workshop-manual.pdfIn PDF document text
- http://riverside-resort.net/1/what-is-the-hesi-exam.pdfIn PDF document text
- http://uncpbisdegree.com/1/smartboard-windows-7-drivers.pdfIn PDF document text
- http://uncpbisdegree.com/1/sweet-unrest-lisa-maxwell.pdfIn PDF document text
- http://uncpbisdegree.com/1/tccc-test-questions-and-answers.pdfIn PDF document text
- http://riverside-resort.net/1/valentines-card-design-black-and-white.pdfIn PDF document text
- http://riverside-resort.net/1/world-leaders.pdfIn PDF document text
- http://www.ascendercorp.com/In PDF document text
- http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
- https://en.wikipedia.org/wiki/Air_brake_%28road_vehicle%29In PDF document text
- http://semitruckmanuals.tpub.com/TM-9-2330-326-14-P/In PDF document text
- https://www.manualslib.com/manual/1024075/Freightliner-Business-Class-M2.htmlIn PDF document text
- https://www.manualslib.com/brand/freightliner/trucks.htmlIn PDF document text
- https://www.manualslib.com/products/Freightliner-Business-Class-M2-4006833.htmlIn PDF document text
- https://www.scribd.com/document/239661436/Gen3-Autoshift-Ultrashift-Ultrashift-Plus-TroubleshootingIn PDF document text
- https://www.google.com/?gws_rd=sslIn PDF document text
- http://www.microsofttranslator.com/bv.aspx?ref=SERP&br=ro&mkt=en-US&dl=en&lp=IT_EN&a=http%3a%2f%2fjujaitaly.net%2fIn PDF document text
- http://go.microsoft.com/fwlink/?LinkId=521839&CLCID=0409In PDF document text
- http://go.microsoft.com/fwlink/?LinkID=246338&CLCID=0409In PDF document text
- https://go.microsoft.com/fwlink/?linkid=868922In PDF document text
- http://go.microsoft.com/fwlink/?LinkID=286759&CLCID=409In PDF document text
- http://go.microsoft.com/fwlink/?LinkID=617297In PDF document text
- https://fedoraproject.org/wiki/Licensing/LiberationFontLicenseIn PDF document text
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00004438.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x4438 | 10136 bytes |
SHA-256: 871831b8c5abea58f6b4cfab5f1e71978cb4f117f59f6e2fb60a199d8f054f3b |
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font_01_sfnt_off00006491.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x6491 | 6928 bytes |
SHA-256: 88e9b6ed20414a5e7e99627fda7a4dc2327c5feae8f6fc10af55aea92d3ae2af |
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