MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. Heuristics identified it as a link farm, with many URLs pointing to compromised CMS upload directories, suggesting a phishing or malware distribution lure. No scripts were extracted, but the structure and heuristic firings strongly indicate a malicious intent to redirect users to external sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 6
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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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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 http://dodici12.ru/wp-content/plugins/super-forms/uploads/php/files/l5okmidsmpppqhdm8hl6jv9jb3/8939703536.pdf
- https://www.brunosistemi.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b7e9f44d4b6---47915198573.pdf
- https://lensprovn.com/ckfinder/userfiles/files/gosatubulujaxubapuxawatu.pdf
- https://www.die-umzugsfabrik.com/wp-content/plugins/formcraft/file-upload/server/content/files/160911ddadea59---misexisomolasabod.pdf
- https://joefairless.com/wp-content/plugins/super-forms/uploads/php/files/9dd76f2c1b98aa7792de62fd58c25b79/vexomemu.pdf
- http://africanhairbraidingsalon.com/userfiles/file/zusasipew.pdf
- https://elitteaccesorios.com/wp-content/plugins/super-forms/uploads/php/files/n468hdqm738ivftqo8cl0shn96/dafozakodinoxaxibar.pdf
- https://cytairtool.com/test/userfiles/file/20210612_2b7cd.pdf
- https://nuevocoach.co.uk/wp-content/plugins/super-forms/uploads/php/files/852f42c8b35e97df333330e2bdc511d8/45720929914.pdf
- http://zap-interactive.com/uploads/files/49643456580.pdf
- https://jodhpurtravels.com/nbloom/fckuploads/file/kaxowevafomila.pdf
- http://proxima-design.cz/files/file/40449190627.pdf
- http://mvdeastudio.it/userfiles/files/temovuvam.pdf
- http://szrealty.net/uploadpic/2021-5/file/2021053004255073499.pdf
- https://ladychief.com/wp-content/plugins/super-forms/uploads/php/files/7207197467ddd78aa6cec772fe801ade/xesagixoziwategumerur.pdf
- http://www.lavalledesign.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606d2cdbedeaf---31660999951.pdf
- http://lahma.pl/_u/userfiles/file/kitidavadisifowelijimifag.pdf
- https://xn--80aaaglcftt5alesfkk7f.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/850662ee9ca9b7806f699c0f5e7579fe/gimofezin.pdf
- http://dermalab.pl/userfiles/file/72014645181.pdf
- http://rufullthrottle.com/wp-content/plugins/formcraft/file-upload/server/content/files/160879debbbbe7---73562253276.pdf
- https://www.saenger-ohg.de/wp-content/plugins/formcraft/file-upload/server/content/files/160b25381c848b---begalovanipobow.pdf
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/160711edb35fc1---48839972619.pdf
- http://nousgarage.com/userfiles/file/wewunufaberebokemamixamej.pdf
- https://www.zulilighting.com/wp-content/plugins/super-forms/uploads/php/files/a113dae04e8aa47dadcf5270eb754020/10800664432.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/LPIa9PGmDLg/uplcv?utm_term=prominent+facet+arthropathy
- https://bxthirteen.wpengine.com/wp-content/plugins/super-forms/uploads/php/files/e7dd5d456378f6995b8b61f64f0268f9/nosixikotekazujexud.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_off0000ed4f.bind5f98826d24dcdf3779396ba6f394cedc8d082eb36304641879f4ba4a5079bfc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED4F | 10648 bytes |
font_01_sfnt_off00010587.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10587 | 16792 bytes |
font_02_sfnt_off00011d99.bin2beafed35d1115b0724e51d4d790bc907ac98d77f095504ea299ababb4663ecc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11D99 | 16568 bytes |
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