MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to multiple compromised websites, some hosted on disposable domains. The presence of external URIs and compromised CMS upload links suggests a phishing or malware distribution scheme.
Machine Learning
- Nyx PDF Classifier malicious score 0.9977
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://wastran.ru/uplcv?utm_term=book+thief+pdf
- http://sinara.org.br/wp-content/plugins/formcraft/file-upload/server/content/files/1611766ee22e0d---risabafagavurezav.pdf
- https://3dreamvr.com/wp-content/plugins/super-forms/uploads/php/files/105a4f55e761dd5e76b227b66569485b/bimisiranapufaterosamupa.pdf
- https://mobistore.co.nz/wp-content/plugins/super-forms/uploads/php/files/427d84cb7a7b97ed240ce0b04b2109fe/kebagufokaxixuvixeninumu.pdf
- https://vate-tire.ru/wp-content/plugins/super-forms/uploads/php/files/4140786da2d3b88939e4fe540c086663/gafiwepefevozapovix.pdf
- http://youzedu.com/ckimages/files/20210818162731769177.pdf
- https://www.chablis-gautherin.com/ckfinder/userfiles/files/8218648296.pdf
- http://hobbstownis100.com/clients/6/66/66141d04a4341350d76ae3a38785cb5a/File/93572045737.pdf
- http://cedarvalekansas.com/clients/875954/File/vazetive.pdf
- http://osc-pribor.ru/products_pictures/file/70822601009.pdf
- http://www.segurosfacility.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/16089bd8bbc87b---23791763540.pdf
- https://sidexsideaudio.com/wp-content/plugins/formcraft/file-upload/server/content/files/1610a12edbac29---56338954962.pdf
- https://costumeworld.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608d1182646a4---tobog.pdf
- http://iccj.jp/images/uploads/fckeditor/file/91743412947.pdf
- http://lube-stc.com/ckfinder/userfiles/files/26692775251.pdf
- http://www.hypnotiseur.com/wp-content/plugins/formcraft/file-upload/server/content/files/160762f632eae9---zegipotikiledef.pdf
- https://jodhpurtravels.com/nbloom/fckuploads/file/22928234589.pdf
- https://directprocessors.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a06f8631fc---munuzepep.pdf
- http://elmiraclassiccountry.com/wp-content/plugins/super-forms/uploads/php/files/e0ec151e7c2bab776b0f70902284b233/39135785128.pdf
- http://jingyilin.org/uploads/file/35424608509.pdf
- https://kingdomofgodmn.org/userfiles/files/80388986984.pdf
- https://autoteam.in/ckfinder/userfiles/files/likugagofab.pdf
- https://www.lashharmony.co.uk/wp-content/plugins/super-forms/uploads/php/files/7pilr8rhj4f6ncivar1jbjdfok/topaxemoju.pdf
- https://samirkumarpaul.com/ckfinder/userfiles/files/zamogatenenubarawumet.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_off0000dd72.bin79a6a7421c68e82c9986eb0651df18bf65290417f10834379d1ee93f9677da2e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD72 | 10160 bytes |
font_01_sfnt_off0000f455.bin58da1a702fea1d43d28f46728b75d1d2a1bb42a9cb948a9ad0e8f968f5f997b5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF455 | 18032 bytes |
font_02_sfnt_off000122db.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x122DB | 16792 bytes |
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