MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm, with many URLs pointing to compromised CMS upload directories, suggesting it's designed to lure users to external sites. The presence of multiple PDF_SEO_DISPOSABLE_LINK_FARM firings further supports this, indicating a tactic to distribute links across disposable hosting.
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://aaexpansionjoint.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e4b03b8916---85496079011.pdf
- https://wrd13.com/force/file/rifepujadekeb.pdf
- https://www.travelticket.com.au/wp-content/plugins/super-forms/uploads/php/files/3rilhnlbkpcksd1155hqvbiogd/47940147571.pdf
- http://www.champcaregivers.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d2ba4d9b678---55059107628.pdf
- https://pontus-sd.eu/uploads/file/manaje.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606ca082675f8---5209306915.pdf
- https://besi.co/ckfinder/userfiles/files/maludarotufirezikakuwixi.pdf
- https://www.aukuras.org/ckfinder/userfiles/files/fofovevaliwula.pdf
- https://tese.in/ckfinder/userfiles/files/vamuvurelida.pdf
- http://womensmentalhealthmd.com/clients/9/9a/9a9ccad1be43d50cbc9928f06550b956/File/powosutugekojewalujulo.pdf
- http://workcoop.org/fckeditor/userimages/file/20210709094840.pdf
- https://criteriacambio.com.br/wp-content/plugins/super-forms/uploads/php/files/q2oop6t8qglc8lnfg40s69a2rl/31406968830.pdf
- https://www.auditek.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16098464846e18---repug.pdf
- http://nikacarpet.com/My_Project/Hamishe_bahar/ahar_img/files/48693946217.pdf
- http://boothbayharborshipyard.com/userfiles/file/pelilexixut.pdf
- http://klusjesindex.nl/images/uploads/navejupevivamekakanar.pdf
- https://medicinasolidale.org/wp-content/plugins/super-forms/uploads/php/files/325bde3acf03657cda67c783e865de18/97485849320.pdf
- http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f9759a65fac---67832091319.pdf
- http://passionsavannah.com/clients/0/0a/0a61c075fa1d7d91f8ce2ef588f7e9ce/File/65053303773.pdf
- https://sakitonus.ru/wp-content/plugins/super-forms/uploads/php/files/ed0a4bca57624b40d4b018a195f58a02/jupekesegez.pdf
- https://hyundainhapkhau.vn/upload/files/suselufitaxef.pdf
- https://notofthisgalaxy.com/wp-content/plugins/super-forms/uploads/php/files/kqburo24g4opufgmffjvgauc7d/28877309767.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/160ab84e2a1176---12815920569.pdf
- http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/160d76ff76b67e---dimukewejosoguxuviw.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3vuEKuznOb8/uplcv?utm_term=first+vaccine+jenner
- 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_off0000bb7e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBB7E | 16792 bytes |
font_01_sfnt_off0000d390.bin93fe50afff866823bfb55aeee02adea60d6338ea1f334d743b57b1825c7cf55e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD390 | 15872 bytes |
font_02_sfnt_off0000fbf5.bin56a0cf4d7eb535fae17221f78daaef75e2a5f4c7bae1e41fbe22984e984451df |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBF5 | 10228 bytes |
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