MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. Heuristics identified it as a link farm pointing to compromised CMS uploads and disposable hosting, suggesting a phishing or malware distribution scheme. The document body was unreadable, but the presence of numerous external URLs, many hosted on unknown or suspicious domains, supports the attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
Heuristics 6
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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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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://bahceneryaman.net/public/content-images/files/narexojiwejomosu.pdf
- http://cungcapbaoduongcuanhatban.com/upload/files/pefikaxugeraselitaxawen.pdf
- https://detskeihriska.eu/ckfinder/userfiles/files/zimavovig.pdf
- http://net-work.cz/data/file/rotodepe.pdf
- http://hitecds.com/userfiles/file/rivetamubafup.pdf
- http://diversecityuk.com/userfiles/file/53479444518.pdf
- http://fygl.net/uploads/file/011920293267.pdf
- http://podushka.by/files/files/bebavisutaxutid.pdf
- https://satellietgroep.nl/userfiles/files/kagoditaz.pdf
- http://www.cheapmotorcycleinsurancepa.com/wp-content/plugins/super-forms/uploads/php/files/d85c394b073097d6f045525bbaed5f1a/88845825878.pdf
- https://777mto.com/contents/files/29704390865.pdf
- http://kperrylaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/bosigigotuvinofu.pdf
- http://sanraimundo.cl/dyn/uploads/file/fetugibifinisabitubiva.pdf
- https://nguyenthelong.net/userfiles/files/govagunumefudafuki.pdf
- https://hmjrgoldhockey.org/wp-content/plugins/super-forms/uploads/php/files/f8a3391814ece6b88ecc573bdf7a8164/57396902518.pdf
- https://nangluongvada.com/uploads/files/nijudarase.pdf
- http://mobydick-band.de/fckdata/file/xuladavorenerorome.pdf
- https://sunwayhk.com/louis/STARKGROUP/ckfinder/userfiles/files/97341500578.pdf
- http://kleiberit.ru/files/file/61962206332.pdf
- http://www.investing-in-women.com/wp-content/plugins/formcraft/file-upload/server/content/files/16147a57c9c548---91083839704.pdf
- http://famcareconnect.org/wp-content/plugins/formcraft/file-upload/server/content/files/16138194a5e0da---8779101282.pdf
- http://webinaris.net/ckfinder/userfiles/publics/files/43942303711.pdf
- https://muahohangnhat.com/app/webroot/uploads/files/gunilifipuzorebupumo.pdf
- https://seroinstitute.com/wp-content/plugins/super-forms/uploads/php/files/07352e67f2cbdd1e1cdf7a15de39c565/15562258720.pdf
- https://ichibaninfotech.com/ckfinder/userfiles/files/12565388885.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=what+happens+if+you+lay+a+refrigerator+on+its+back
- 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_off0000e3fe.binbe93d31cd7a98b7d0e3487b461c0a9f0be1be3220c35eb5a4efc04be932f4c25 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE3FE | 11196 bytes |
font_01_sfnt_off0000fe08.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE08 | 16792 bytes |
font_02_sfnt_off0001161a.bin9fe2f6967cd01d728730655291d220f7bb418e3f80803e8f11cb7f8b850b1b42 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1161A | 17956 bytes |
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