MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF employs a common phishing tactic by presenting itself as an image-based lure, encouraging users to click through to external URLs. Multiple heuristics indicate this is a link farm hosted on potentially compromised CMS uploads and disposable domains. The ClamAV detection and ML classifier strongly suggest malicious intent, likely to redirect users to a malicious site for further exploitation or credential harvesting.
Machine Learning
- Nyx PDF Classifier malicious score 0.9960
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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Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LUREPDF has 1 image(s), only 2 text block(s), carries a click-outward action, and is only 67 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
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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://helices-evra.com/userfiles/file/26755902116.pdf
- http://www.benvenutialmare.com/wp-content/plugins/formcraft/file-upload/server/content/files/161346c4c36e75---vemofunomogikixifap.pdf
- https://shevian.com/images/file/jewun.pdf
- https://drinkpoint.com/uploads/files/65630591989.pdf
- http://resurrection-life.net/userfiles/files/velowaxofizerebajug.pdf
- http://www.nomorcantikjoss.com/file/sanev.pdf
- http://www.deco-interieure.com/userfiles/file/4256574114.pdf
- https://francoisdaulte.com/ckfinder/userfiles/files/48853800151.pdf
- http://com123.vn/uploads/file/24014848633.pdf
- http://gopherandsquirrelcontrol.com/admin/images/file/71642424146.pdf
- http://uniquecharacters.com/upload/files/72794910399.pdf
- http://tractortools.cz/ckfinder/userfiles/files/20973877418.pdf
- https://elmawadah.com/userfiles/file/tilukoni.pdf
- https://viajespereira.com/wp-content/plugins/formcraft/file-upload/server/content/files/16144a1a71fb7f---37947955527.pdf
- http://babyshelter.net/assets/upload/files/88227852830.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/1614b3893dfc85---63075535667.pdf
- http://ip-malkov.ru/uploads/files/22053923475.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/16141cf2de6b6b---81699999342.pdf
- https://inchirieriavioane.ro/wp-content/plugins/formcraft/file-upload/server/content/files/161496b7a5f35b---kolojujifupuziku.pdf
- http://woodlandhills.ilovepokebar.com/uploads/files/majazatum.pdf
- http://tw-echen.com/uploads/files/202109031218345722.pdf
- https://cs168.tw/upfiles/editor/files/13924154374.pdf
- http://localhomesales.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/161342d553a081---zanatakajawevuxivuwupas.pdf
- https://veritiesinstitute.com/wp-content/plugins/super-forms/uploads/php/files/e2be196da58b784ef80d581ff4f62c79/golimesupod.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=potplayer+android+tv
- 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_off0000af04.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAF04 | 16792 bytes |
font_01_sfnt_off0000c71b.bin022341752d15f6be6a4c88d6c0a0efeb649a92d172d8336d64b210d2b495f7f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC71B | 10396 bytes |
font_02_sfnt_off0000dec0.bin5b4bf91e7d33752c408da25245fe048312a8805f881802d2a7f8a92c9bbf47f2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDEC0 | 14200 bytes |
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