MALICIOUS
176
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains numerous links, many pointing to disposable hosting or compromised CMS upload directories, suggesting a link farm designed to redirect users to malicious sites. The presence of a QR code lure further supports a phishing or social engineering attack vector.
Machine Learning
- Nyx PDF Classifier malicious score 0.9991
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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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 https://gemma.lucien-sv.info/uploads/files/6141c9921e042.pdf
- https://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/9a0e090fb22f4f40b2c11308ec6c7b0c/dotozetixulivadiw.pdf
- http://asea-admin.com/_userfiles/file/20210905185140.pdf
- https://beautifulhairstore.com/upload/files/nibebusiz.pdf
- https://skyzoan.com/cake/beta/userfiles/file/loximomopiwuwabodobunen.pdf
- https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/45183201995.pdf
- https://zlato-eu.cz/upload/files/pufokaleri.pdf
- https://inprovitcentroamerica.com/ckfinder/userfiles/files/77060775970.pdf
- http://phutunggiahungoto.com/uploads/files/kewawilidibo.pdf
- http://ct-tci.com/cttax/userfiles/files/tomiwezakuxetirokujuni.pdf
- http://montpellier-businessplan.fr/mbp/upload/images/images/upload/ckfinder/wigimoka.pdf
- http://dongamold.com/fckeditor/upload_files/file/11966439887.pdf
- http://guojingmall.com/userfiles/file///11983957102.pdf
- https://parisnordmedical.fr/docs/file/56538308624.pdf
- http://studio-castiglioni.com/userfiles/files/sifine.pdf
- http://ophirtonhotel.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/1613e508765707---povas.pdf
- http://alumcity.ru/userfiles/file/vomakebaledetagavelelax.pdf
- https://www.andimoda.com/wp-content/plugins/super-forms/uploads/php/files/91668784f9a600f2322ff148cd55c87b/kupesit.pdf
- http://rotarycochinharbour.org/ci/userfiles/files/64654081090.pdf
- http://snieznik.pl/userfiles/file/zezigolimositaxakevodo.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BvfzZFkJO3s/uplcv?utm_term=how+to+enable+wifi+on+android+phone
- 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_off0000d8e5.bin81813072b73c975c3cb59840b108c661c6a665e41e1c5f2b5b3a356015a8bb79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD8E5 | 10644 bytes |
font_01_sfnt_off0000f0e9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF0E9 | 16792 bytes |
font_02_sfnt_off000108fb.bin3197951c3c79e9bf256d9863849ff72c85b5defb16e3e3d108100c0eb39cde79 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x108FB | 18016 bytes |
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