MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ClamAV as a phishing trojan and ML classifiers indicated maliciousness. It contains a link farm pointing to multiple disposable domains, a common tactic for distributing malware or conducting phishing. The presence of embedded URLs and the 'PDF_SEO_DISPOSABLE_LINK_FARM' heuristic strongly suggest the document's purpose is to redirect users to potentially harmful sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
Heuristics 7
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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://sys-svinding.dk/userfiles/file/muganopajagovejug.pdf
- http://drivingtesttips.ie/fckeditor/userfiles/file/kosometidewizixif.pdf
- https://slotpt2.com/contents/files/denogirude.pdf
- http://radis-rrl.ru/userfiles/image/xomufumematariguk.pdf
- http://dush-kz.ru/uploads/fck/file/welowopudazowiro.pdf
- https://congtydaihai.com/upload/files/zuxeruv.pdf
- http://pharmabiosolutions.com/filespath/files/20210907150220.pdf
- http://www.cascinasorigherio.it/wp-content/plugins/formcraft/file-upload/server/content/files/1612f3e10374ca---gimipugamividelitud.pdf
- http://hitecds.com/userfiles/file/30062351980.pdf
- http://officinedesign.it/userfiles/files/lemulusumigowokogej.pdf
- https://sipare.com.ar/wp-content/plugins/super-forms/uploads/php/files/dvpe6qv8qthdrn9f2b7hhrsjeb/34563078396.pdf
- http://thegioichuyendong.info/app/webroot/upload/files/tanoxofabikimezik.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613aba174dd02---26572804438.pdf
- http://methese.com/upload/files/18028531751.pdf
- https://texigo.tw/upfile/files/2021/09/08/48265622165.pdf
- http://trustarshida.co/cache/fck_files/file/14358622253.pdf
- http://www.1000ena.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131263beefb3---kixej.pdf
- https://postele-z-masivu.sk/ckfinder/userfiles/files/nezuliv.pdf
- https://ratsimae.ee/media/contents/file/jevekozuvazoxuweda.pdf
- http://www.barbazan-debat.fr/ckfinder/userfiles/files/pedanagobes.pdf
- http://uyaviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16131d4b9db9c1---92131053267.pdf
- https://hlj-vibration.com/uploads/image/20210909/files/20210909204800.pdf
- http://sutinlawkrabi.com/ckfinder/userfiles/files/3677330116.pdf
- http://abwvictory.com/uploads/files/36648556378.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/6naE_Nh8_CY/uplcv?utm_term=how+to+use+private+dns+on+android
- 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_off0000e84c.bina698cfe816ebb86952d324d9f9b18f67b22b382b7a0cb3ac47294214dfff2a68 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE84C | 10584 bytes |
font_01_sfnt_off0001009e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1009E | 16792 bytes |
font_02_sfnt_off000118b0.binbe3e74a62c6adb48a298d81fcc2615b732c8a9dd9c5937318da22d7a8ef0a3bd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118B0 | 17296 bytes |
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