MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to numerous compromised websites hosted on disposable domains. These links likely serve as lures for phishing attacks or to distribute further malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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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 https://crewmak.ru/uplcv?utm_term=evidence+that+supports+the+theory+of+evolution
- https://harpethvalleypto.org/wp-content/plugins/super-forms/uploads/php/files/2fc25058e6a8428b5c340becbed6c374/83759228061.pdf
- https://medtek.vn/storage/file/52651647089.pdf
- http://livingkaneohe.com/userimages/71163805998.pdf
- https://www.ferienhof-schneider.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a253f1ba504---kikilenov.pdf
- http://zaun-produzent.de/userfiles/file/69743369919.pdf
- http://jevades.com/aircraft/fckimages/file/94364574502.pdf
- https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/aa3bfceb5d3197dc36218591a6f8fdb5/22628737446.pdf
- https://connect.allianceflooring.net/wp-content/plugins/super-forms/uploads/php/files/dd9c236cfd5bf7da3d8228ff69f1107e/pibixusavejatugeseva.pdf
- https://socohoteldanang.com/uploads/image/files/88811141077.pdf
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/506577c41bd1e6bedb38568b40b6ab26/27651259012.pdf
- https://stijsr.com/userfiles/file/21835438013.pdf
- https://akapacha.com/userfiles/file/72601725970.pdf
- https://christembassyromford.org/wp-content/plugins/super-forms/uploads/php/files/f24bd9b82bb3c94d6673b959f29fb8ef/81145230144.pdf
- https://calldidocta.com/wp-content/plugins/super-forms/uploads/php/files/c5ac9d40452c6811f5503c5e0dea2e6f/8189769085.pdf
- http://chalappuram.com/userfiles/file/taradi.pdf
- https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/b56d8b31f83c68336ed81d148b7f2cbd/javufe.pdf
- http://chicagohalo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e76a5549a4---dopanivakafagoworiz.pdf
- http://curry-box-deluxe.de/userfiles/file/53255185929.pdf
- https://refour.eu/wp-content/plugins/super-forms/uploads/php/files/641aa05a3a4af665d90c730daed254ea/nipixavaxotidisovugodas.pdf
- https://ludifrance.fr/userfiles/file/zepitezawoxotegemaxij.pdf
- http://www.corazondelsol.es/ckfinder/userfiles/files/39800028292.pdf
- http://lpkgoodframeupvc.com/userfiles/files/62514922224.pdf
- https://robinio.de/wp-content/plugins/super-forms/uploads/php/files/1qv7u72a5e6of4uieuh80sric7/63087205549.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000f44c.bin14309e6da455b43443962218a1f889212d036a4cb933ee7a58abc570c5ac9c1f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF44C | 10980 bytes |
font_01_sfnt_off00010db9.bin417575598fdd04314911f0abe5b241acbce9a7bc895b616e43623d9c09f9ce83 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DB9 | 16644 bytes |
font_02_sfnt_off0001383f.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1383F | 16792 bytes |
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