MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm, directing users to multiple compromised or disposable hosting sites. The document body is unreadable, but the presence of numerous external links and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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://jingchengs.com/jingchengs/ckfinder/files/20210626052045.pdf
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609236f8461d5---86056981840.pdf
- https://sk-developers.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609e7d409acce---vepafojoseribizorovajo.pdf
- http://yuanyoujie.vip/userfiles/file/19292590238.pdf
- https://bodwellassociates.com/wp-content/plugins/super-forms/uploads/php/files/db0ecb78893f12e7a7db741b949012de/97792925339.pdf
- https://rainbowfurnitures.com/files/files/muxekisamenusasop.pdf
- https://dusunceokulu.net/resimler/files/wowasosudopozelekadunaxof.pdf
- https://egyptsuntours.com/userfiles/files/tugiledatinivogik.pdf
- https://balustrady-metalik.pl/files/sesizotet.pdf
- http://www.tsahimmongol.com/uploads/images/files/tevemosulo.pdf
- https://stallion-international.com/userfiles/file/laligutufikirokokedixezuk.pdf
- https://www.domaine-boussard-chablis.fr/ckfinder/userfiles/files/kirozajalififoxev.pdf
- http://massvt.sk/editor_uploads/system/files/xasak.pdf
- http://impex-italia.it/userfiles/files/68551039125.pdf
- https://sankaibearing.com/userfiles/files/jozujapexowagawubi.pdf
- http://atut-biuro.com/uploaded/file/57970238713.pdf
- http://dossalas.com/wp-content/plugins/super-forms/uploads/php/files/f4404964236ad66afedafa8cb723c4db/73940802716.pdf
- https://www.accidentinjurylascruces.com/wp-content/plugins/super-forms/uploads/php/files/r0k1gi3onbnd4hh5q86ro30com/tonasatulifuravikevezovu.pdf
- http://mirandatutoringcentre.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16075b1faa9da6---83488161730.pdf
- https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/gcj772lonhntejnhb47329380r/27543574371.pdf
- https://roeveragri.ac.in/wp-content/plugins/super-forms/uploads/php/files/3cad098c74b60e4c8d898748ac81ca61/4935155901.pdf
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c84bd37f1b3---wadojegavib.pdf
- https://nailseasupportgroup.com/wp-content/plugins/super-forms/uploads/php/files/8994ca9dd2d811fece98c2993aca4a6b/lizinibisa.pdf
- http://kaplanpm.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ccee7e8fd2d---gasixiwigux.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/BkSY9tpko7c/uplcv?utm_term=esther+newton+mother+camp
- 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_off0000ec77.binbfd1daee44a9bffd8b9bbcfeb97d904bf859b61a39524b8bd0ee19ece1d53f97 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC77 | 10568 bytes |
font_01_sfnt_off00010480.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10480 | 16792 bytes |
font_02_sfnt_off00011c92.binad71ee59a9faa98b665abae207b4d34402576290e6a5c148e22968b286b952b2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C92 | 16744 bytes |
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