MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains numerous embedded URLs, many of which point to compromised CMS upload directories or disposable hosting, indicating a link farm designed to distribute malicious content or phish users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely related to phishing or malware delivery.
Machine Learning
- Nyx PDF Classifier malicious score 0.9909
Heuristics 6
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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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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 https://krisoc.ru/uplcv?utm_term=ice+scream+4+game+download+apk
- http://c2r-auto.com/uploadfiles/file/2021090719571773499.pdf
- https://nocnepal.org.np/ckfinder/userfiles/files/lafoxanofukakulekugitosof.pdf
- http://poptheme.cn/uploadfile/files/20210906_121144.pdf
- http://spl-designs.com/ckfinder/userfiles/files/73864260852.pdf
- http://psychanalyste-gard.fr/ckfinder/userfiles/files/65981961251.pdf
- http://brilliantsolarpaneling.com/userfiles/file/34142896444.pdf
- https://vilus.cz/userfiles/file/25097154554.pdf
- https://hainutedecopii.eu/ckfinder/userfiles/files/lijumodopegi.pdf
- https://tecnicadovolante.com/images/file/80113325041.pdf
- https://rosewoodcity.org/nbloom/fckuploads/file/kesol.pdf
- http://hfengly.dk/skoleportalen/userfiles/file/64281911819.pdf
- http://maility.pl/_ADRESuserfiles/file/65101218831.pdf
- https://carcable-bg.com/uploads/pictures/files/zagumodumaguvusimidusaxu.pdf
- http://villaelen.it/userfiles/files/daxitu.pdf
- http://graczeonline.pl/userfiles/file/33417465465.pdf
- https://cancelaria.pl/galeria/file/delosusibadopufape.pdf
- https://digiconelectronics.com/media/melukorajulivebazabo.pdf
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/16141fa1d8524f---14388680443.pdf
- http://www.musicmaestrodiscos.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/16135f195865c8---nokave.pdf
- http://dmn.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1614750349821b---lebulufaxotirine.pdf
- http://esoftland.com/userfiles/file/47113034024.pdf
- http://sage-chem.com/image/files/20210922_042725.pdf
- http://j-line.ca/fck_upload/file/takeduxabativutubogal.pdf
- http://posicert.com/upload_fck/file/2021-9-10/20210910015846691853.pdf
- http://bannhuaduong.net/upload/files/11043943223.pdf
- https://minhgianggroup.vn/upload/files/kubagapokavubovitezenafak.pdf
- http://www.fd.ntou.edu.tw/ckfinder/userfiles/files/mibeduregilumakagukob.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_off0000b512.bin32b21977a0aff2244d1948716c376bea2fbdc2c2b13fbcac2193470f9ca27bf0 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB512 | 16268 bytes |
font_01_sfnt_off0000de4e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDE4E | 16792 bytes |
font_02_sfnt_off0000f665.binc0c521aa6847d5287040c5737de399bbcf518d8f891dcca4c3e604368cd78421 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF665 | 10876 bytes |
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