MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and ML classifiers, indicating a phishing or malware distribution attempt. It contains an embedded JavaScript stream and a link farm pointing to various disposable hosting sites, likely serving as a lure for users to download further malicious content. The presence of a QR code lure also suggests an attempt to redirect users via mobile devices.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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://zzps.pl/userfiles/file/debolobaf.pdf
- http://autosklo.sk/pictures/file/10904636062.pdf
- http://studiodrago.eu/userfiles/files/99144244608.pdf
- https://mercedesmazo.es/wp-content/plugins/formcraft/file-upload/server/content/files/1614c3b107e84c---57101373380.pdf
- https://morganmethod.com/ci/userfiles/files/52562439145.pdf
- http://perechen-izdaniy.ru/js/ckfinder/userfiles/files/80795078381.pdf
- http://nawaress.com/webroot/js/ckfinder/userfiles/files/xanif.pdf
- http://go-trec.com/wp-content/plugins/super-forms/uploads/php/files/sta18acr7t98bp6ffd4tv8jo6u/95891764107.pdf
- http://ttccid.com/userfiles/file/757900072.pdf
- https://kanat.com/upload/ckfinder/files/guwaduxozas.pdf
- https://sbmhavacilik.com/userfiles/file/79067114668.pdf
- http://coeb.eu/userfiles/files/5793958651.pdf
- http://phutungvespaco.com/luutru/files/7424722606.pdf
- http://poliambulatorioargentina.eu/userfiles/files/63437993369.pdf
- http://www.smwiarus.pl/ckfinder/userfiles/files/88756216209.pdf
- http://gs-metals.com/filespath/files/20210916084957.pdf
- http://crystalnymph.by/wp-content/plugins/super-forms/uploads/php/files/b23b239414a58068540c001936b05088/44431065997.pdf
- https://faktxeber.ru/resimler/files/fifubipo.pdf
- https://holocaustresearch.pl/nowy/photo/file/rasumokubutelovuzilimavin.pdf
- https://copperscrap.wasteequipment.net/ckfinder/userfiles/files/71133158562.pdf
- https://tnmkor.com/FileData/ckfinder/files/20210922_8D83B6DBE0A7D0CC.pdf
- http://bfr-bialapodlaska.pl/userfiles/file/13217905931.pdf
- https://pergamine.com/ckfinder/userfiles/files/bizoxeli.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/DOqCt-cVA4I/uplcv?utm_term=speed+storm+beystadium+qr+code
- 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_off0000e0da.bin036db2efdd638fdc65e228b5dd5b1b71d02552f1e1515d35a6c629a7b5b7cac5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0DA | 18116 bytes |
font_01_sfnt_off00011020.binb7fe55cdc0b230a4b68012b52d88560ea4b7ce4e7dbbcc6a93b86e93ae4379d1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11020 | 11100 bytes |
font_02_sfnt_off000129a9.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x129A9 | 16792 bytes |
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