MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. Heuristics reveal it functions as a link farm, with many URLs pointing to compromised or disposable hosting, suggesting a phishing or malware distribution scheme. The PDF's structure and the presence of numerous external links, including those on compromised CMS uploads, support this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9912
Heuristics 6
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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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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://www.novosib-sport.ru/ckfinder/userfiles/files/97243757011.pdf
- https://777mto.info/contents/files/wixazilubovubebokiv.pdf
- http://jjburgerut.com/uploads/files/gitisavezamuxotujolom.pdf
- http://streetnn.ru/data/upload/ck/files/68721776538.pdf
- https://trimix.bg/UserFiles/File/xewiboxiva.pdf
- https://avenirpourtous.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16133d141a72bf---sakaloj.pdf
- https://susta.vn/userfiles/file/botofipipakaxidilupap.pdf
- https://magnanelli.com/userfiles/file/90646171355.pdf
- http://tochalco.com/uploads/files/54588549208.pdf
- http://ibconsulting.it/userfiles/files/bikowalad.pdf
- http://kindervakantieweekdeurne.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1613528562ca88---vudeziwamawawega.pdf
- http://stagelight.pl/userfiles/files/87975446417.pdf
- https://adci.vn/data/upload/file/mezoxak.pdf
- https://snf.styleguides.ch/userfiles/files/28527356917.pdf
- http://maxitelt.no/wp-content/plugins/formcraft/file-upload/server/content/files/16145d9a208bbe---59765194928.pdf
- http://wildzipper.com/clients/wildzipper/userfiles/file/38595697240.pdf
- http://bwemfjhjk.friend-match.com/upload/files/6894966924.pdf
- http://sinching.com/uploadpic/files/202109071414173742.pdf
- http://kco.su/userfiles/file/28845506789.pdf
- https://didacostruzioni.it/userfiles/file/zixuburirerowoxevodenove.pdf
- http://hevolta.com/upload/file/99405671280.pdf
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613effaf91d84---pavuvazuzafava.pdf
- http://tks-forever.com/upload/2021/09/15/file/fisava.pdf
- https://delphin-restaurant.com/ckfinder/upload/files/limekeguwuxed.pdf
- http://naasschoolofmotoring.com/fckeditor/userfiles/file/13613846750.pdf
- https://pinpointfeedtech.com/ckfinder/userfiles/files/wobakotezakiw.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/ngfLrbzwjls/uplcv?utm_term=phone+keeps+losing+data+connection
- 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_off0000ec70.bin9183f684e57114f4f08a2d43f48f3bb751b57461589f246b4516d03c6f5dc5f9 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEC70 | 18592 bytes |
font_01_sfnt_off00011c22.bin32a2c4bed7524cdba3d47986b3c550b20088d8a77d2715ab4f3129144730cc6b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11C22 | 10784 bytes |
font_02_sfnt_off000134b8.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x134B8 | 16792 bytes |
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