MALICIOUS
216
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF file was flagged by multiple heuristics as malicious, including a fake CAPTCHA prompt and a link farm pointing to compromised CMS uploads. The document's content, though heavily obfuscated in the provided excerpt, likely serves as a lure for a phishing or tech-support scam, prompting users to interact with malicious links. The presence of numerous URLs hosted on potentially disposable or compromised domains reinforces the malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 8
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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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Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHADocument displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://xn--80aaeiengkwpz6p.xn--p1ai/pub/file/mukomojabojuwizive.pdf
- http://modellszerviz.hu/userfiles/file/271284963.pdf
- http://plusbateria.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c8710ec8d9d---53690407666.pdf
- https://samiznojmo.cz/wp-content/plugins/super-forms/uploads/php/files/98f6ba99feadcaeb9929cf0efce7085a/vomofekafosum.pdf
- http://www.gradur.ba/wp-content/plugins/formcraft/file-upload/server/content/files/16083ebecb1dbf---1875132170.pdf
- https://www.spreefahrten-berlin.de/wp-content/plugins/super-forms/uploads/php/files/23jnaj9vc67go8205sf2mkq77f/tovumorazo.pdf
- http://hattrick-sports.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a7f3f7d4cac---3336846926.pdf
- http://rubivina.com/Images_upload/files/batepureno.pdf
- http://infinivideo.hu/sites/infinivideo/files/kapilafavuzisowukosajabur.pdf
- https://kakvkusno26.ru/wp-content/plugins/super-forms/uploads/php/files/a3ebf6945875603868cd0de62cfce7fa/57826677936.pdf
- http://denis-lefebvre-services.com/fichiers/file/rejivapufikobemuvazog.pdf
- http://www.rlktechniek.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1606fbbbb8ffac---10448986113.pdf
- https://klingende-zeder.de/wp-content/plugins/formcraft/file-upload/server/content/files/160764ec24af2f---56353415784.pdf
- https://rzfmuhasebe.com/userfiles/file/11545420121.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607cdef4a1334---4676780325.pdf
- http://chnli.tw/CKEdit/upload/files/belomotadabadazajuxolol.pdf
- http://pnmanagementsolutions.in/uploads/dukofuxakewowotudopejufaf.pdf
- https://realestateconnect.biz/wp-content/plugins/super-forms/uploads/php/files/9n7ampktgu1h7gm19vsl57mli3/37960295941.pdf
- http://teplospectr.ru/images/files/48102499833.pdf
- http://www.asslar.de/downloads/48249505375.pdf
- http://podlahypilat.cz/admin/file/xedazidasudokavenas.pdf
- https://evpersoneli.net/ev-personeli/file/simov.pdf
- http://peusch.lu/userfiles/files/sovexudukosiverotiwoxaz.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1KS0DP0cxss/uplcv?utm_term=cultural+diffusion+in+a+sentence
- 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_off00014984.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14984 | 16792 bytes |
font_01_sfnt_off00016196.bin42e4edbeb6127fd91bbff5af5732321f67f09eb0485b37ae37f723548c61f09b |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x16196 | 19700 bytes |
font_02_sfnt_off000193f1.bin966e422fe6ad15dc7393c9afd9a618a29ad394d2b287d9b931e36255d6ec1a6d |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x193F1 | 10600 bytes |
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