MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was flagged by ClamAV as a phishing trojan and a machine learning model also indicated maliciousness with high confidence. The file contains numerous links to external PDFs hosted on compromised websites, suggesting a link farm designed to distribute malware. The presence of a 'download button' heuristic further supports the attack pattern of luring users to download a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9979
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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 https://agrotehholding.ru/wp-content/plugins/super-forms/uploads/php/files/3fb342cdb228e0c0390e293f8f6e9858/zirolimivibesamavotasive.pdf
- http://indiebookoftheday.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609ee0e8a6366---pixiwatuwep.pdf
- http://drapa-technika.cz/UserFiles/File/gibadofawu.pdf
- http://jeyadhurgatemple.com/userfiles/file/27305532682.pdf
- https://cortopolis.ar/userfiles/file/vugiledimamorixogozivopap.pdf
- https://asigurareingermania.ro/wp-content/plugins/super-forms/uploads/php/files/c0ab3rd9nu02815td9btmrr3mf/zokuzadupelavuromuroru.pdf
- http://cedresarquitectura.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608cc1cf70b45---73143979067.pdf
- http://j-line.ca/fck_upload/file/53932656744.pdf
- https://www.cibaospalaser.com/wp-content/plugins/super-forms/uploads/php/files/brc3is5ucrdto252176akbrb6d/bojiva.pdf
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160bd7e077dca0---57945615097.pdf
- http://mini-garden.ru/userfiles/file/tovonivatofuzerazamuge.pdf
- http://finsura-lifedirect.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160bc7875093ae---56050075836.pdf
- http://sigep60s-ncbeta.com/clients/44785/File/wufokomorawafedos.pdf
- https://www.etbsupplies.com/wp-content/plugins/formcraft/file-upload/server/content/files/160f788afcd1e5---sekudabosa.pdf
- http://jrpst.pl/userfiles/file/nagowurozifibopo.pdf
- http://www.dnevi-sekretarjev.eu/wp-content/plugins/formcraft/file-upload/server/content/files/160a8ec6c57b2a---14961630031.pdf
- https://anfauglir.com/images/file/fowopo.pdf
- https://vishalahospitality.com/ckfinder/userfiles/files/kisad.pdf
- https://www.blackandwhite-salon.com/wp-content/plugins/super-forms/uploads/php/files/71734886df8310f4c2c640e5f27a766d/loraxiviwiso.pdf
- https://www.formwork.co.uk/wp-content/plugins/super-forms/uploads/php/files/84sr46ad5huf1r8gsq5omt9jtg/nalumisiduxisepuzet.pdf
- https://www.rockandroll.blog.br/wp-content/plugins/super-forms/uploads/php/files/gv4fq9nj3fe9dmfsbc831p1c0h/ponaligaluderowubawifavu.pdf
- http://royalgoodviewresort.com/Uploads/file/ketowijewi.pdf
- http://aotwresort.org/ckfinder/userfiles/files/84535925513.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/cv9VXjIrmdE/uplcv?utm_term=problemas+de+planteamiento+de+ecuaciones+de+segundo+grado+pdf
- 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_off000102d6.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x102D6 | 16792 bytes |
font_01_sfnt_off00011aed.bin3f47f8e9b928d0f0d84ceb626a1d110e6b6a20210ab25dd744088b14068018bb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11AED | 11204 bytes |
font_02_sfnt_off000134b0.binc0d7b39e58b31aac6204ccba49b8bbcebdaf9b6b676407c20a066d400a9ac524 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134B0 | 18708 bytes |
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