MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The ML classifier and ClamAV detection strongly indicate maliciousness. The PDF contains numerous links to external sites, many hosted on compromised WordPress installations, suggesting a link farm or phishing lure. The 'SE_INVOICE_LURE' heuristic further supports the interpretation that this document is designed to trick users into clicking malicious links by impersonating an invoice or payment request.
Machine Learning
- Nyx PDF Classifier malicious score 0.9970
Heuristics 7
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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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Fake invoice / payment lure low SE_INVOICE_LUREDocument contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
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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://chcial.ru/uplcv?utm_term=salary+after+taxes+chicago
- https://gaseg.com/wp-content/plugins/super-forms/uploads/php/files/r0dr0u9k75m8t99demaui2195d/97090118384.pdf
- http://sazjah.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca2f0b0a32---61277621072.pdf
- https://dianthusindustrial.com/resimler/files/88642476898.pdf
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a37b2fd64de---xanumiliga.pdf
- http://samnakthodrahassob.com/userfiles/file/76685880306.pdf
- https://betenenergy.com/sites/default/files/file/vimipaba.pdf
- http://yatros.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1608754baa592a---81953702418.pdf
- http://hilltop1976.com/clients/24685/File/73976238468.pdf
- https://mymango.ru/wp-content/plugins/super-forms/uploads/php/files/c22578d2cc3b174586d6f5345442c788/89704752676.pdf
- https://greshamgilessalon.com/wp-content/plugins/super-forms/uploads/php/files/bb5d1b6d7a4fbfd24b0eb9928de0ffad/fenarenofopelitidi.pdf
- https://xlux.vn/wp-content/plugins/super-forms/uploads/php/files/440n30tvfmeuqjs6kldv1pgr1e/13088346730.pdf
- https://yournew.site/wp-content/plugins/super-forms/uploads/php/files/gm9cihdr86b30c09sjn3ltjppe/1745731084.pdf
- https://hagepoorter.be/files/files/53318011988.pdf
- http://jeugdopdewetenschapsagenda.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160733afd11ae5---8850590780.pdf
- https://ceccarbotosani.ro/userfiles/file/bexidagibidugaxomixi.pdf
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e82f954791a29fd24f1c416dcac86989/fudurusejedidujabozi.pdf
- http://math-talk.kr/wp-content/plugins/super-forms/uploads/php/files/stng0apbh9pjq66j6hemqorv5r/6585881672.pdf
- http://parcfamilyreunion.com/clients/b/b3/b3ae52aef0329bb57e848b27182677c8/File/52754968220.pdf
- https://kantankacreative.com/wp-content/plugins/super-forms/uploads/php/files/4da3896df72e02fa225c47948b7cc557/pomatakav.pdf
- https://nuregio.de/wp-content/plugins/formcraft/file-upload/server/content/files/16084642936fbb---tufopexa.pdf
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606e4abad86e6---viwolosokumewa.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_off0000eed1.binfd1463bdaab0929eabe03ee1dd50acc04fcbfa04602a0eacf89efb66d10f0982 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEED1 | 17116 bytes |
font_01_sfnt_off00011b8e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11B8E | 16792 bytes |
font_02_sfnt_off000133a5.bin68ba6a8d040d0efb87ba61b34be539e29bb613e1b27918ec213b4ee14c555fa2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x133A5 | 10800 bytes |
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