MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV detecting it as a phishing trojan. The file contains a link farm pointing to compromised WordPress sites, suggesting an attempt to redirect users to malicious content. The presence of numerous PDF_SEO_DISPOSABLE_LINK_FARM and PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM firings indicates a strategy to host malicious content on potentially compromised or disposable domains.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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://www.zulfugar.nl/wp-content/plugins/formcraft/file-upload/server/content/files/160ab5464db0a3---50601662446.pdf
- http://hesexpo.com/img/editor/image/file/feduv.pdf
- https://www.hdontheroadnapoli.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a0f95660b25---35451153141.pdf
- http://ztkammer.at/uploads/file/votusaloroxalo.pdf
- http://filtrydokoparek.pl/img/all/33136785187.pdf
- https://jennysbooks.com/wp-content/plugins/super-forms/uploads/php/files/f4960572591bd9082900595facb7a2b1/42965684470.pdf
- https://aquariumfargo.com/wp-content/plugins/super-forms/uploads/php/files/b4a8621fa8605097129a65aaf625fdf8/68648162272.pdf
- https://adiwirawanbali.com/wp-content/plugins/super-forms/uploads/php/files/dafd5b7fd8a9ea7bb3f72b0e2eb92d1e/57273032164.pdf
- https://www.hotel-palladium.gr/wp-content/plugins/super-forms/uploads/php/files/le7gb9p0p0vk7ts5e0o884e01e/76655016247.pdf
- http://tragadsonisurat.com/ckfinder/userfiles/files/mulemeziwovadivanen.pdf
- https://ottenburger.com/userfiles/file/zilibuwudin.pdf
- http://bugaboo-buffalo.eu/UserFiles/File/fimifokasar.pdf
- https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607e27e27dfac---46796753341.pdf
- http://emotionpicturesfestival.gr/userfiles/file/vowalovifewuxorotekag.pdf
- https://www.lowdoc-loans.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/1608a1b33ebf19---95796651276.pdf
- https://carpanea.it/wp-content/plugins/super-forms/uploads/php/files/431e35550b0b9e4ee8e4260c45bde711/kapopekesexavufa.pdf
- http://www.medicalalliedtraining.com/wp-content/plugins/formcraft/file-upload/server/content/files/160833afadc579---getozapexow.pdf
- http://barudan.hk/UploadFile/file/20210522104113703.pdf
- http://fortlauderdalelimorental.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a151f35b232---zudizemuvesofisixepov.pdf
- https://www.davinci.dk/wp-content/plugins/formcraft/file-upload/server/content/files/1608405e6c3fbb---4943639347.pdf
- http://inspirationallabels.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/160ab1c3faf567---dojavakinet.pdf
- http://china-hold.com/UploadFile/file/20210605140103513.pdf
- https://teenvolunteer.org/wp-content/plugins/super-forms/uploads/php/files/a56ee8753b11f4c1f1c7f20ea8f906cd/10138945146.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/6naE_Nh8_CY/uplcv?utm_term=occult+bacteremia+treatment
- 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_off0000c979.bin98694941d29f26fcb8e28507c163dcaff27f81f4ead10f8b94d990e90446b459 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC979 | 10368 bytes |
font_01_sfnt_off0000e0e6.bin6b7b0100ef48deccef98d11fd2b89b8707921a36b8cdc796d5d1099f27f5d4ee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0E6 | 17284 bytes |
font_02_sfnt_off00010dd7.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10DD7 | 16792 bytes |
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