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 WordPress sites and disposable hosting domains. These links likely serve as lures for phishing or to download further malicious payloads.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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 https://krisoc.ru/uplcv?utm_term=4pic1word+3+letters
- http://smartmedicaleg.com/wp-content/plugins/formcraft/file-upload/server/content/files/16096a4f3a547d---parogajizetabirilosuwigaj.pdf
- https://communeouchamps.fr/userfiles/file/xorolevafopo.pdf
- http://kondicionery-vidnoe.ru/upload_picture/file/mabemexemuketa.pdf
- https://davaocarrental.com/images/file/13794966218.pdf
- http://cp-1.ru/userfiles/files/84084980934.pdf
- http://www.carolglassman.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bc6429a2c36---48928403890.pdf
- https://securitydm.rs/slicice/file/37127189433.pdf
- https://salubrismd.com/wp-content/plugins/super-forms/uploads/php/files/abbc4de24dcb858b585444368956b1c0/27168590831.pdf
- http://ebanksunited.com/clients/7/7d/7da19d52c1086e69e61582739ce98a0f/File/12245734514.pdf
- https://worldkelo.com/wp-content/plugins/super-forms/uploads/php/files/a1bcc98accebd4e644c94bbf46a9ee7a/mizotizategegiwomu.pdf
- https://uaqbakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608a241f2250b---14691816875.pdf
- https://wacee.net/wp-content/plugins/formcraft/file-upload/server/content/files/16074437b2dc54---6479417996.pdf
- http://reicar.dk/userfiles/file/3096190411.pdf
- https://felix-schulze.biz/wp-content/plugins/super-forms/uploads/php/files/kitf94k2nj18i3opc9tn2h38pu/78523287231.pdf
- https://lerong.vn/wp-content/plugins/super-forms/uploads/php/files/e5d60df37d01d279f131d1620c9968b1/vilalavunisuropimexiwa.pdf
- https://agermag.ro/mm/file/tetazubiwopovugigeju.pdf
- https://digireg.nu/upload/zalemunakefebaromugu.pdf
- http://akifkasaboglu.com/esatfisek/images_upload/files/61918411373.pdf
- http://comicpapyrus.com/wp-content/plugins/super-forms/uploads/php/files/b6c2be751fe56b537461f3973cd8c9c5/bojajudajavitonusan.pdf
- http://dharmapremipariwar.org/userfiles/file/96089309705.pdf
- http://infinijewelry.com/userfiles/file/64378223002.pdf
- https://nam.it/wp-content/plugins/formcraft/file-upload/server/content/files/16087bf46c4b18---48873821959.pdf
- https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/160729e4d6e3d2---92695661817.pdf
- http://www.nanodrywash.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609017ec7abc5---33112285388.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_off0000bbb2.bin3dd01a2bf69c505fc29c67619024ed6e4a926dc4681168fd26b660b63fa73d56 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBBB2 | 16140 bytes |
font_01_sfnt_off0000e523.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE523 | 16792 bytes |
font_02_sfnt_off0000fd3a.bin1c8b0778dec6119a31cda462e9b5dbb0735de63f25ce8f24bbcdbd91f4494b00 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFD3A | 10532 bytes |
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