MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many of which point to compromised WordPress sites and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate malicious intent, likely related to phishing or distributing further malware. The document body is heavily obfuscated and unreadable, preventing a more detailed analysis of its specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9860
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://atx-stroy.ru/wp-content/plugins/super-forms/uploads/php/files/783f7538fa4d27c1cc77c775d9516e12/gisividilap.pdf
- https://kodcomputers.ro/2664/uploads/41450640596.pdf
- http://jamessham.com/admin/usercontent/file/91616096082.pdf
- https://www.uniqueartzz.com/wp-content/plugins/super-forms/uploads/php/files/6ghn79c7pis9g718c7knsnba48/vulusuzajisulali.pdf
- https://coevent.ru/upload/files/85771245176.pdf
- https://iominneapolis.com/wp-content/plugins/super-forms/uploads/php/files/9840912eb4fc12811d5a27c496c012c3/solasul.pdf
- https://thewaves.net/wp-content/plugins/super-forms/uploads/php/files/9mim0lvi0cfopt013thcf4apc2/18495433427.pdf
- https://too.kg/wp-content/plugins/super-forms/uploads/php/files/c7d6fcbe0ab891cb2632bd86c513fd43/9647938429.pdf
- https://universal4shipping.net/userfiles/file/35805131449.pdf
- https://pcstaiwan.com/ckfinder/userfiles/files/daxubinilu.pdf
- https://corpusbg.com/files/fck/file/57520264051.pdf
- https://cullinanconstruction.com/wp-content/plugins/super-forms/uploads/php/files/dbgmggbjg6e3akb40usq2brqn4/90518515930.pdf
- https://xanbiente.de/userfiles/file/vunibuxe.pdf
- http://biosafety.biz/ckfinder/userfiles/files/zevubij.pdf
- http://uniquecharacters.com/upload/files/kofufap.pdf
- https://aspaeng.com/files/image/files/2427592848.pdf
- https://www.lamuccacompany.com/wp-content/plugins/super-forms/uploads/php/files/38eb295d319292bc9a4dfb7f9d152172/bumazebuzabexotemu.pdf
- http://kwik-it.ru/wp-content/plugins/formcraft/file-upload/server/content/files/1609f2567c1a8f---jesawapamefidakorufevo.pdf
- http://logisticsnetworks.net/ckfinder/userfiles/files/72282451192.pdf
- https://autotronics.vn/userfiles/file/sativofalijagin.pdf
- http://lisahyatthealth.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075b21f1392f---gasidatomosex.pdf
- http://bukharaatlanta.com/sites/default/files/file/tanezisunow.pdf
- http://www.bestlifepolicy.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1607ea987ea770---17560211862.pdf
- https://ccveg.org/wp-content/plugins/super-forms/uploads/php/files/larj6t6e2gv3qg2dilnqt5prn0/xisore.pdf
- https://yourlightingbrand.com/wp-content/plugins/super-forms/uploads/php/files/ad4064382b717261feb8e4713371901b/fuxobe.pdf
- https://www.autodepotperformancegroup.ca/wp-content/plugins/super-forms/uploads/php/files/ap2v659ml95s7mti85c1ehtcdj/fisokixusilekogad.pdf
- https://feedproxy.google.com/~r/skout/mBVl/~3/BkSY9tpko7c/uplcv?utm_term=ict+management+meaning
- 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_off0000e7cd.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE7CD | 16792 bytes |
font_01_sfnt_off0000ffe4.bin92f5d20741f417cb932ff701a7075f6f160da1a03935f34398c5c92d8a5d3640 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFFE4 | 10088 bytes |
font_02_sfnt_off00011657.bin2a31df2d80adca97f887a7e7831118d972130d4682028172f03834ee21c64df2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11657 | 16600 bytes |
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