MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by ClamAV as Pdf.Phishing.Trojan and a machine learning classifier indicated a high probability of maliciousness. The file contains numerous external URLs, many hosted on compromised WordPress sites, suggesting it functions as a link farm. The presence of these links and the overall structure indicate an attempt to direct users to potentially malicious content or phishing sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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://infrive.ru/uplcv?utm_term=driving+test+paper+pdf
- http://plenar.hr/wp-content/plugins/formcraft/file-upload/server/content/files/1607df1f19b9f7---69334183479.pdf
- https://brunoamaranti.it/wp-content/plugins/super-forms/uploads/php/files/h1qoskd6987qmf3rvbnvk8p040/loxasedoxenadaweb.pdf
- http://shipsupply.ru/userfiles/files/lisinofufadiwerofavufoweg.pdf
- http://www.kreasoft.mx/wp-content/plugins/formcraft/file-upload/server/content/files/16073b4633c3cd---48979525487.pdf
- http://xn----8sbfeahwarn6ac1adp3fb2p.xn--p1ai/userfiles/file/xutakawoligerexatofalir.pdf
- http://www.fullertherapy.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606c83002d86e---godorebuwigeb.pdf
- https://attack.lt/images/files/jupajapes.pdf
- https://brusroom.com/wp-content/plugins/super-forms/uploads/php/files/c81a4e1ca25ba0b51c7cadd3c094c050/bokekugodupod.pdf
- http://enotecagaribaldi.it/userfiles/files/vorewodopuposapaseki.pdf
- https://wkd-uk.com/wp-content/plugins/super-forms/uploads/php/files/ad736adf7c21bdef7449f030cafc411c/29800603556.pdf
- http://www.sevenchurchestour.net/seven/wp-content/plugins/formcraft/file-upload/server/content/files/1608780c00c6db---ribakesirijalajixe.pdf
- http://www.hj-bouwt.be/wp-content/plugins/formcraft/file-upload/server/content/files/160b40f4747152---95742979902.pdf
- http://au-coeur-du-temps.com/userfiles/file/ruxakosiresipifafojozukej.pdf
- https://whitelightdesign.com/wp-content/plugins/super-forms/uploads/php/files/5dc1d4faec75b1b6d96fa968fb3f7705/wifovu.pdf
- http://bfr-bialapodlaska.pl/userfiles/file/78088387920.pdf
- https://www.ezhealthcheck.com/wp-content/plugins/super-forms/uploads/php/files/o684h4763tadqqfpl798gvv648/29596103032.pdf
- http://medipharmacompany.com/userfiles/files/vibifapebokidapuwopoto.pdf
- https://cffcommunications.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1/1609d4227431e4---93988686195.pdf
- https://seataclightingalaska.com/wp-content/plugins/super-forms/uploads/php/files/1287a70346ec61adf33d27dd6bb4261c/14400529804.pdf
- https://glowskincare.net/wp-content/plugins/super-forms/uploads/php/files/f5f8597a438f45a41be658cadbc2df9c/43229435492.pdf
- http://mutamobilya.com/images_upload/files/93871185125.pdf
- http://remontnoedelo.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1607cc004769cf---61385227000.pdf
- https://pabausa.org/wp-content/plugins/formcraft/file-upload/server/content/files/1606f566bce3fa---jegolag.pdf
- https://infiniteprospects.com/FCKeditor/file/3428008288.pdf
- https://singaporeroadshow.com/wp-content/plugins/super-forms/uploads/php/files/7921b33592df02c021a189898f1e4cd6/lojapijufani.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_off000111f6.bind670bad9fb9067991058aa647a9533034397540444014a791e1fefdedc04c9af |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x111F6 | 17412 bytes |
font_01_sfnt_off00013f7c.bin7f8631baa24ad0cf626acd851b3cdcf5c4c9edb78a93fd8eb9298b35f6bdf7dc |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13F7C | 10572 bytes |
font_02_sfnt_off00015791.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x15791 | 16792 bytes |
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