MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ClamAV as a phishing trojan and by an ML classifier, indicating malicious intent. It contains numerous links to compromised WordPress sites and disposable hosting, suggesting a link farm designed to redirect users to malicious content. The presence of embedded URLs and the nature of the heuristics strongly suggest this document is part of a phishing campaign, likely using a spearphishing attachment as the initial access vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9937
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://odpadykj.cz/UserFiles/File/91159181442.pdf
- http://vipavtoufa.ru/wp-content/plugins/super-forms/uploads/php/files/1ca18db15bc66a77728157cb45b67a5d/lugububumuxifodibiwew.pdf
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/4016665932cd1e3ca3eed1207fd487b6/gilerizozeliweravujilugix.pdf
- http://alibabashipping.com/userfiles/file/texagowuduvado.pdf
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e791da015be1d4890183c70cb5bb79ee/31548306548.pdf
- http://plafondchauffant.fr//img/user/file/xupamane.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d074e5d309---ninejafowumogelujazubu.pdf
- http://www.sunarsurdurulebilir.com/wp-content/plugins/super-forms/uploads/php/files/v062mjqbu40kn265kj9srhtic4/12911184468.pdf
- https://congchung7.com/upload/file/67684539062.pdf
- http://katachizu.com/img/news/files/goserozez.pdf
- http://hi-reid-solutions.com/wp-content/plugins/super-forms/uploads/php/files/bf4273d681ada03e2443755bc7ecb292/95153074645.pdf
- https://cms.blauraum.com/wp-content/plugins/super-forms/uploads/php/files/df0a40cea73bbee956a2624f1f41f99d/96328475533.pdf
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c0edf8846cb---16095698434.pdf
- https://www.masismarketing.com/wp-content/plugins/super-forms/uploads/php/files/de4c63e7a4e91ef0093f4154c0b61134/21132857618.pdf
- http://www.anjhimayath.com/upload/file/vurejurebepiwogokipuna.pdf
- http://auchli-appenzeller.ch/userfiles/files/zunabix.pdf
- https://dermo.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607c86ff10beb---37948195513.pdf
- http://www.holzbau-hoelzl.at/wp-content/plugins/formcraft/file-upload/server/content/files/160861e4eafd30---92993891572.pdf
- http://morgancountyoh.com/userimages/wavatidas.pdf
- https://www.rydalmereprestige.com.au/wp-content/plugins/super-forms/uploads/php/files/rl4t4jeadusfjssdv6oo5lcof4/25827229971.pdf
- https://www.reliancecareuk.com/wp-content/plugins/super-forms/uploads/php/files/66906c078e107bf42325695ce89e56da/gupetezosoxegipukufef.pdf
- http://uci.ir/userfiles/file/mejifibozetisajajopebuja.pdf
- https://arizonalightingsales.com/wp-content/plugins/super-forms/uploads/php/files/c839c31b63623fb9b706fd318637e66a/waronatakuzifegunolafeje.pdf
- https://orkhaconstruction.com/wp-content/plugins/super-forms/uploads/php/files/2q07nh5gfcfh6ghpb7nek3buba/73055640418.pdf
- http://www.pranabkumar.com/fckimages/file/farorunawevilobevujijet.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/3CAf4wW3hvY/uplcv?utm_term=finance+intern+interview+questions+and+answers
- 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_off00010ba7.binaa821a3da4a716954fca90f4dcc473d1404a030ac9ab9a5c2a2e3943b4418e6e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10BA7 | 17636 bytes |
font_01_sfnt_off00013a1c.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13A1C | 16792 bytes |
font_02_sfnt_off00015233.binb64a198ab58e729f746616c55637684e898d66484128c0df65b810d77e569ca0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15233 | 10692 bytes |
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