MALICIOUS
184
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and a significant number of external URIs, many of which point to compromised or disposable hosting. The 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' heuristics indicate a pattern of using link farms for malicious distribution. The embedded JavaScript likely facilitates the redirection or download of further malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9990
Heuristics 8
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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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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://www.cemeba.com/uploads/ckfinder/files/65156083181.pdf
- https://theipbuzz.com/images/file/2406272311.pdf
- http://ats-dz.com/userfiles/file/kepogeketot.pdf
- https://parkettworld.com/upload/files/33945485189.pdf
- https://semangkamerah.com/contents/files/bovadovodosoger.pdf
- http://lightofislamonair.org/uploads/files/78866011318.pdf
- http://remont-m.com/userfiles/file/jatobebagibut.pdf
- https://soi.icami.mx/ckfinder/userfiles/files/jimifixodepelifowanovuwur.pdf
- https://eclearusa.com/images/file/33252335636.pdf
- https://balance-global.com/wp-content/plugins/super-forms/uploads/php/files/1rhlhgddqap7pe3bogaqb40doj/50714249463.pdf
- http://e-skala.pl/userfiles/file/94139819937.pdf
- http://www.mueblesgamez.com/ckfinder/userfiles/files/57391491969.pdf
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/6smjphdthhkgfeu285me4f7am7/wafizopokugowotog.pdf
- http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/24621394037.pdf
- http://rutka.pl/media/upload/files/eaf578013e18c11bdf025bcb4e4497a3.pdf
- https://ilonew.tasksplan.com/userfiles/files/fazewidogomivapegew.pdf
- http://jl-vacuum.com/upload/files/putivuv.pdf
- http://denprokhorov.ru/images/file/tunanobubenepinibuwekotix.pdf
- https://tapuionoticias.com/ckfinder/files/76872344287.pdf
- https://teplitsyoptom.ru/wp-content/plugins/super-forms/uploads/php/files/dc97d06eadab159ad87f41ff9c422f4d/nefobugironekukaniludaw.pdf
- https://feedproxy.google.com/~r/Uplcv/~3/S30rS-6n6vg/uplcv?utm_term=yahoomail+com+login
- 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_off0000c54a.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC54A | 16792 bytes |
font_01_sfnt_off0000dd61.bin8c196cc703673cdb343869147cfcc764007889c448f40f1ea44d41bc95906cee |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDD61 | 10164 bytes |
font_02_sfnt_off0000f3d7.bin0d504e53c7952c1b1486f51caf7fc2386275db88477e01372c1c0ab2ca15eee7 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF3D7 | 17956 bytes |
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