MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample is a malicious PDF, detected by ML classifiers and ClamAV, that uses a fake invoice lure. It contains numerous embedded URLs pointing to compromised WordPress sites and disposable hosting, likely intended to redirect the user to a malicious payload. The PDF structure and embedded links suggest an attempt to trick the user into downloading and executing a second-stage exploit or malware.
Machine Learning
- Nyx PDF Classifier malicious score 0.9952
Heuristics 7
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ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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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://allytemp.ru/uplcv?utm_term=other+receivables+do+not+include
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/9np20bo614hr10bbn4pppvhqbm/vusukogelulal.pdf
- https://psychotherapie-dr-albrecht.de/wp-content/plugins/formcraft/file-upload/server/content/files/160cd4a6ce73ba---mevaruvat.pdf
- https://impariant-club.ru/wp-content/plugins/super-forms/uploads/php/files/52185685ead166156c05439ee34562e6/13452062105.pdf
- http://candemdientu.com/Images_upload/files/lodinevebuwowasileza.pdf
- http://mu-rrrc.com/userfiles/file/femamag.pdf
- https://www.femregenx.co.za/wp-content/plugins/super-forms/uploads/php/files/8sra7t5uatrqvobdl3ercsvhq1/24046953305.pdf
- http://www.tif.cn/wp-content/plugins/super-forms/uploads/php/files/igelpjhrtl22t1menu0udtoeft/rubobun.pdf
- http://xn--b1ahhafccpgkb2bxo.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/221c144d355eea885dd5e1c0cc8a933a/83112387846.pdf
- http://averon.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160c39d8e56c3b---73866539909.pdf
- http://purpledoorchurch.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606cd2f93a851---tukuwer.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e2aa55a917---jemat.pdf
- http://stadtbild-intervention.de/Quansis/ckfinder/userfiles/files/tifobokinifepijibewa.pdf
- https://www.federatedlighting.com/wp-content/plugins/super-forms/uploads/php/files/fb7dbd3032c14682bc7262966baa0ccb/kizudamodi.pdf
- https://invest.pl/userfiles/file/59140561232.pdf
- https://churchosonline.com/wp-content/plugins/super-forms/uploads/php/files/a515ffca7ddcfca67225eee15b32a905/83895908318.pdf
- https://evenimentecastel.ro/wp-content/plugins/super-forms/uploads/php/files/tv80vf6nckp089i8gssf7rroai/gikebumiferikezo.pdf
- http://alibabashipping.com/userfiles/file/91468960728.pdf
- http://phantasos.org/userfiles/file/kurewifeliraberojufusavu.pdf
- https://biovuspharma.net/userfiles/files/dusufuxanukununa.pdf
- http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f15c38f9ca---60044667149.pdf
- https://prosegik.com/wp-content/plugins/super-forms/uploads/php/files/b995e81caa457392d919e956ae203f68/lamiladezomato.pdf
- http://industrialdevices.in/uploads/13174209763.pdf
- http://firegallery.ru/img/upload/naguzasejawelitanileja.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_off0000ec10.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC10 | 16792 bytes |
font_01_sfnt_off00010422.bina611790299d04ab05dc0764e70372c48248791772b807a4230c1a56bbeaf5ce1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10422 | 17312 bytes |
font_02_sfnt_off00013130.bin6fa48a0dded65a75295e582b9cca41746375b82a8962c89777659ae21d23eae7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13130 | 10800 bytes |
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