MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF was flagged by multiple heuristics as a link farm, with many URLs pointing to compromised WordPress sites and disposable hosting. The ML classifier and ClamAV also identified it as malicious, specifically as a phishing trojan. The embedded URLs are likely used to lure victims into clicking on malicious links, potentially leading to credential theft or further malware infection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://tubietelbar.hu/uploadfile/buxewopolutakawivewijol.pdf
- https://ideylia.fr/uploads/file/75850730866.pdf
- https://karinbentum.nl/uploads/file/26751379231.pdf
- http://www.alfainstal.pl/wp-content/plugins/formcraft/file-upload/server/content/files/160b037e598094---devepaveguxavotuxaguzi.pdf
- http://shopsuathientu.com/uploads/userfiles/file/pogefoduzulemetevoxida.pdf
- https://kristinanamaste.eu/files/kozawepasar.pdf
- http://terminsk.by/pics/files/xezevuwu.pdf
- https://lcd96.ru/wp-content/plugins/super-forms/uploads/php/files/724caeb12da7a57c8211273265dc778f/51421399290.pdf
- http://indovinandoilmondo.it/themes/userfiles//files/70898762149.pdf
- https://alfa-pechati.ru/wp-content/plugins/super-forms/uploads/php/files/64c0131393233af54ad8551127ee2f71/95989897593.pdf
- https://imagebuzz.net/ckfinder/userfiles/files/58412958.pdf
- http://amfmeg.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608f0c1ac6236---77706722819.pdf
- http://www.ellisrasbetonwerke.co.za/wp-content/plugins/formcraft/file-upload/server/content/files/16087b54536ca1---xujojefaxogatuko.pdf
- http://tanriovermensucat.com/uploads/genel/files/belurimewasinimomipogun.pdf
- https://wholisticvibrations.com/wp-content/plugins/super-forms/uploads/php/files/b25228719f47af83d0e82cb15b4d567b/giwawujunoj.pdf
- http://gloucesterclassof81.com/clients/23558/File/23073595270.pdf
- https://vetranhtuongmamnon.vn/wp-content/plugins/super-forms/uploads/php/files/nqlldebkoaj5r3mdpinrlu3c48/78538247319.pdf
- http://teplospectr.ru/images/files/vidatexoxota.pdf
- http://aberdeeneyes.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606c9e639a531---85456058009.pdf
- http://greenbrier101.com/userimages/redajo.pdf
- https://mvpartners.be/images/uploadedimages/file/10481017497.pdf
- https://www.cpro.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16079f9de54083---49519948088.pdf
- https://inchiriereelicopterromania.ro/wp-content/plugins/formcraft/file-upload/server/content/files/160961beca0ba7---fosedexetuwefupoxug.pdf
- http://raunlarose.us/wp-content/plugins/formcraft/file-upload/server/content/files/16090f9a9b3c0e---15044990753.pdf
- https://www.abotamiami.com/wp-content/uploads/2017/11/Subpoena-Duces-Tecum-for-Depos
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/3CAf4wW3hvY/uplcv?utm_term=notice+of+deposition+by+video+conference
- 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_off0000f858.bin497bb1e3b547d82f906e565ac67cc77431e7292f5f714de36d1f7b584e0222cf |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF858 | 10700 bytes |
font_01_sfnt_off000110d9.bin48f44b30c4cc1f4639f9251a21383936517151c477c47cbe78d206f2d80f6d08 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x110D9 | 17256 bytes |
font_02_sfnt_off00013dfd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13DFD | 16792 bytes |
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