MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The sample was detected by ClamAV as Pdf.Phishing.Trojan and ML classifiers also flagged it as malicious. It contains embedded JavaScript and a link farm pointing to multiple PDF files hosted on compromised websites, suggesting a phishing or malware distribution campaign. The heuristic 'PDF_SEO_DISPOSABLE_LINK_FARM' indicates a pattern of using disposable hosting for these links.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
Heuristics 8
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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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://liavanhaeringen.nl/userfiles/files/10898918534.pdf
- http://www.hausman.eu/images/wyswig_images/file/11223571431.pdf
- https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/aa2720e8925bbae0e1b971e049dd4a36/24658233813.pdf
- https://www.natursany.com/ckfinder/userfiles/files/4560371920.pdf
- http://giasuthienphuc.com/Images_upload/files/875998986.pdf
- https://hediyelikhanem.com/calisma2/files/uploads/wusuvesi.pdf
- http://wmc21.com/ckupload/files/dilesunavuru.pdf
- http://elitakhealing.com/ckfinder/userfiles/files/12923445858.pdf
- http://indagosrl.it/userfiles/files/32602064976.pdf
- http://jessie.vn/images/ckeditor/files/naxadoxenirofebexafatoxa.pdf
- http://churchliferesources.org/wp-content/plugins/formcraft/file-upload/server/content/files/1613005592e40e---poponusi.pdf
- http://omniatel.it/wp-content/plugins/formcraft/file-upload/server/content/files/16143116b239e8---64512032683.pdf
- https://fajanav.com/aym_image/files/78661995238.pdf
- https://aluminiosarla.com/userfiles_arla/files/ruzezozovad.pdf
- https://purpleleafestatebuyers.com/wp-content/plugins/formcraft/file-upload/server/content/files/161400df60f07a---jotariwesadikamupelosopu.pdf
- http://marsalanoleggio.it/userfiles/files/vefazejavaxetajenufobox.pdf
- http://namhungholdings.com/uploads/ckfinder/files/govuxeredo.pdf
- https://airflow-skateboards.com/userfiles/files/zanewu.pdf
- http://ozdermusavirlik.net/userfiles/file/rofik.pdf
- http://webinaris.net/ckfinder/userfiles/publics/files/zijunalumofe.pdf
- https://podimercrm.com/img/files/68340030935.pdf
- http://china-engine.net/ckfinder/userfiles/files/rigezitativorifomepid.pdf
- http://fabriquetextil.com/js/new/fckeditor/userfiles/file/tirinasepugokezedurixuf.pdf
- https://vitanov.rs/files/sokowafunotokolegulijek.pdf
- https://www.comperat-89.fr/ckfinder/userfiles/files/pozanamol.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/FevRqgeaUVY/uplcv?utm_term=apk+creator+pro+apk
- 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_off0000c6f9.bin05a87553a626152feb95b37946d4231359261845ac41faa122b6833792209709 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC6F9 | 17680 bytes |
font_01_sfnt_off0000f486.binfb90ec175dfabf2511996a8e6980a6eda976fd47c6b78a9c6b91a427338f45c2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF486 | 10028 bytes |
font_02_sfnt_off00010b03.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10B03 | 16792 bytes |
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