MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains a link farm pointing to multiple compromised WordPress sites, likely intended to host malicious content or redirect users to phishing pages. Heuristics indicate this PDF is part of a link farm strategy, and ClamAV detection confirms its malicious nature. The primary attack pattern involves luring users through a malicious attachment to compromised websites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://csc0512.com/userfiles/file/20210615181503_38lhv4.pdf
- http://lbs.ac.at/wp-content/plugins/super-forms/uploads/php/files/j2ctpdc28gvrfu1tk7ej4oomc9/28730789833.pdf
- http://immodraft.nrw/images/architekten_agentur_images_/file/40665850819.pdf
- https://xn--80aanugxqi.xn--p1ai/admin/ckfinder/userfiles/files/25070445535.pdf
- https://centrosteadycam.it/wp-content/plugins/super-forms/uploads/php/files/52d402255cb6911a72fc41419f6c61b7/vugekuta.pdf
- https://ceadersvalet.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e9c922f60b---96198361622.pdf
- http://tipiland.net/upload/file/palorivofopiwivi.pdf
- https://medok18.ru/wp-content/plugins/super-forms/uploads/php/files/345e819583b77137930efdd0beff1f9a/gujumanukebugijuri.pdf
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160adb3f205cf4---xazojevuwoxuvolup.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16077a4424b622---jemuriwawubetodixepo.pdf
- https://rabudiagnostic.com/userfiles/files/94397794214.pdf
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/16079e98074211---39019826177.pdf
- https://livstyle.ro/home/livstyle/public_html/uploads/files/doxawewetev.pdf
- http://rauvuonsach.net/images/uploads/files/dududikewi.pdf
- http://grandinspirations.com/clients/75274/File/60610097526.pdf
- http://www.majoriscambio.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/1609ca4afa36a6---roxeliwozal.pdf
- http://marathon-gexin.com/Uploadfiles/files/51447606491.pdf
- https://www.sacproblemleri.com/wp-content/plugins/formcraft/file-upload/server/content/files/16088f09f2e5e7---90639696477.pdf
- http://wenxuezj.com/images/File/39882731292.pdf
- http://rollfactorytogo.com/uploads/files/52809937701.pdf
- http://www.combatsim.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160ac4facf0329---gekoru.pdf
- https://hiddencliff.kr/FileData/ckfinder/files/20210606_4E6FFBC240CB2445.pdf
- https://glosunspa.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c90ee8d2963---7555331460.pdf
- https://jetzterstrecht.hamburg/wp-content/plugins/super-forms/uploads/php/files/hfvn3rcvvkgth8empqelsdfnsl/21432409671.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/Om9ozkHLxGw/uplcv?utm_term=south+mountain+camping
- 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_off0000ffe3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFE3 | 16792 bytes |
font_01_sfnt_off000117f5.bin700eeaab2094d591f41a1d83ff56cbe316b722fa5456df9935a11390509cdb8a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x117F5 | 18056 bytes |
font_02_sfnt_off0001478a.bin531ca561fab175828b1ea2d7f5fa2a5ebe3596d2b131ec412ee67160af9379cf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1478A | 10552 bytes |
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