MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and an ML classifier as malicious, with ClamAV identifying it as a phishing trojan. The file contains a link farm pointing to various PDF files hosted on compromised websites, suggesting a phishing or malware distribution campaign. Although no scripts were directly extracted, the presence of numerous external links indicates an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9972
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 https://chcial.ru/uplcv?utm_term=think+and+grow+rich+book+pdf+free
- http://vivaldiskibus.com/FileData/ckfinder/files/20210703_55A8CDEF278DFFFC.pdf
- https://puertoestereo.com/wp-content/plugins/super-forms/uploads/php/files/a6ol0sadh3id1vvvpp7qv5nska/menemade.pdf
- https://aawyx.com/sites/default/imageuser/file/belanejolot.pdf
- http://houstontca.org/Content/uploads/files/wifisijibatuvedugusamawim.pdf
- https://hylyt.co/wp-content/plugins/super-forms/uploads/php/files/3633c73301e71e7c784fe2d276eb4846/84223468398.pdf
- http://www.stratcareerservices.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609f2cb71e0df---simupel.pdf
- http://gruppocinofilomarsalese.com/userfiles/files/zowal.pdf
- http://banglatalkies.com/dynamic-images/cms/file/97331965298.pdf
- https://stdtekstil.com/upload/ckfinder/files/fujowe.pdf
- https://www.mii.net/wp-content/plugins/super-forms/uploads/php/files/ea609fda49d9fe11dc740bddd704f638/28911895787.pdf
- http://bergfin.se/wp-content/plugins/formcraft/file-upload/server/content/files/16082b5a2c6256---fifimepipukazabibudepate.pdf
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a602362be45---65716184936.pdf
- https://wecafephuket.com/wp-content/plugins/super-forms/uploads/php/files/cu880otcg9jnlq2u5t2d8npv1r/nigewebidorosolowoxesof.pdf
- https://dienlanhbachkhoa.info/upload/files/mewavotelesezoloruredo.pdf
- http://www.photobreak.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1606d29171e706---vexobilenabejogise.pdf
- http://www.naturapreserved.com/wp-content/plugins/formcraft/file-upload/server/content/files/160731aab3ed84---44469751779.pdf
- http://zerosquareonline.com/file/52043537212.pdf
- http://www.optionassurance.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160a3a60c54cff---75009164493.pdf
- http://profisystem.ro/wp-content/plugins/formcraft/file-upload/server/content/files/16087a54bd57a3---35997496608.pdf
- https://aquaticlandscape.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608362b1a322a---xenebisibukiti.pdf
- http://focostrade.com/files/20210612072551.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_off0000e6eb.binb0233bdc40c4664a6e04c2f39fe36c94e7d0d27a51946dd0095bf191b6c75ddb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE6EB | 10868 bytes |
font_01_sfnt_off0000ff8f.bin8fd355bd3a20ff0e20bcd1a90ea0864a43e2a7f6d76eebc155878dd927010717 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFF8F | 16828 bytes |
font_02_sfnt_off00012b75.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12B75 | 16792 bytes |
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