MALICIOUS
130
Risk Score
Malware Insights
MITRE ATT&CK
T1566.002 Spearphishing Attachment
T1204.002 Malicious File
The PDF file contains embedded URLs that point to a suspicious domain, 'uncpbisdegree.com', which is likely hosting a malicious payload. The ML classifier flagged this PDF with high confidence, and the presence of a 'download button' heuristic further supports the malicious intent. The document body, though partially corrupted, contains references to the suspicious URLs, reinforcing the attack vector of luring the user to download a file.
Machine Learning
- Nyx PDF Classifier malicious score 0.9202
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=united-states-rubber-company.pdf In PDF document text
- http://uncpbisdegree.com/download4.php?q=united-states-rubber-company.pdfIn PDF document text
- http://firestonebpco.com/In PDF document text
- http://www.finotex.com/united-states/In PDF document text
- http://www.fischer-technology.com/en/united-states/In PDF document text
- http://investors.coopertire.com/In PDF document text
- http://unammo.com/In PDF document text
- https://www.rubberband.com/In PDF document text
- http://riverside-resort.net/1/unite-8-lecon-31-workbook-answers.pdfIn PDF document text
- http://riverside-resort.net/1/weather-studies-investigations-manual-2014-answer-key.pdfIn PDF document text
- http://uncpbisdegree.com/1/skullcandy-agent-headphone-headphones-owners-manual.pdfIn PDF document text
- http://riverside-resort.net/1/verizon-network-extender-manual.pdfIn PDF document text
- http://riverside-resort.net/1/when-skeptics-ask-a-handbook-on-christian-evidences.pdfIn PDF document text
- http://riverside-resort.net/1/what-comic-book-series-should-i-read.pdfIn PDF document text
- http://riverside-resort.net/1/waec-2018-commerce.pdfIn PDF document text
- http://uncpbisdegree.com/1/ssangyong-rodius-workshop-manual.pdfIn PDF document text
- http://riverside-resort.net/1/unilever-coupons-usa.pdfIn PDF document text
- http://uncpbisdegree.com/1/the-earl-of-mayo-and-the-consolidation-of-the-british-rule-in-india.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/United_States_Rubber_CompanyIn PDF document text
- https://en.wikipedia.org/wiki/President_of_the_United_StatesIn PDF document text
- https://www.aldoshoes.com/us/en_USIn PDF document text
- http://www.usp.org/In PDF document text
- https://www.asbestos.com/states/In PDF document text
- https://www.asbestos.com/exposure/In PDF document text
- https://eh.net/encyclopedia/economic-history-of-tractors-in-the-united-states/In 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_off00003ebc.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x3EBC | 10132 bytes |
SHA-256: b6d34b514357aa5d3ba881fb215b320080750f6fa4159fd1c2f2ace8ba47846f |
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font_01_sfnt_off00005f12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x5F12 | 7092 bytes |
SHA-256: f6c1feab37ef8a5fd9c1b6dd31c371a2973b5573e085f4cccae0730300056504 |
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