MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF was flagged by a machine learning classifier and ClamAV as malicious, specifically as a phishing trojan. Multiple heuristics indicate the document functions as a link farm, directing users to various PDF files hosted on compromised or disposable domains. The presence of a 'download' button lure further supports the intent to trick users into downloading a payload.
Machine Learning
- Nyx PDF Classifier malicious score 0.9994
Heuristics 7
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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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Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTONDocument contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
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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://harc-ias.vn/Images_upload/files/82826015020.pdf
- https://digireg.at/upload/96316283664.pdf
- http://naasschoolofmotoring.com/fckeditor/userfiles/file/wanebisofezixuzipiba.pdf
- https://stegopackaging.com/wp-content/plugins/super-forms/uploads/php/files/8e97oulaptbsjqb5vsp3dphjqn/94253799536.pdf
- https://tkpmission.org/wp-content/plugins/formcraft/file-upload/server/content/files/160c4333d7ad95---beduxadakomejigifibulel.pdf
- http://sz-nuoyi.com/Upload/file/2021072407292730910.pdf
- http://steclotildehorton.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16087202a72fd9---22816561466.pdf
- https://provisionsinternational.com/wp-content/plugins/formcraft/file-upload/server/content/files/1606f245798d5e---28578726492.pdf
- https://healthmatters.me/userfiles/file/gokuworagamal.pdf
- https://www.frankreich-ferien.ch/wp-content/plugins/formcraft/file-upload/server/content/files/16079f7793d1e3---90431752976.pdf
- https://eqonetech.com/upload/userfiles/files/mevugodirepani.pdf
- http://manavpublicschool.org/manav/userfiles/file/bifopa.pdf
- http://africanhairbraidingsalon.com/userfiles/file/nowuxolerezimuwijoz.pdf
- http://anhbanglaw.com/userfiles/file/mediwalabi.pdf
- http://splogservice.ru/content/file/suruvebekodamidawam.pdf
- http://www.celso.org/download/begufuvafunimo.pdf
- https://www.denisonlandscaping.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a9ec0647a1d---dowetazuko.pdf
- http://fst-uinsu.net/userfiles/files/xalotagikavapaba.pdf
- https://roomart.uz/ckfinder/userfiles/files/ludeditugig.pdf
- https://suemsas.com/wp-content/plugins/super-forms/uploads/php/files/7vh5bf7t94imuif1c2dmk2n963/59688901747.pdf
- https://fermuar.com/wp-content/plugins/formcraft/file-upload/server/content/files/16098307177ba2---xapiwesivumaxutusesutu.pdf
- http://heninrealty.com/userfiles/files/52107248982.pdf
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/1xuhb7AK25c/uplcv?utm_term=joker+bathroom+dance+piano+sheet+music
- 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_off0000f057.binb31625e36630d417f20b9c4895f123051428deedb8b63b4d76ac4fb3957ac2f5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF057 | 17436 bytes |
font_01_sfnt_off00011e34.bin2c469dc2aede1ef58bf60a2172f9cb66efabb828933ee8cb7732f74c3d9aef38 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E34 | 11056 bytes |
font_02_sfnt_off00013797.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13797 | 16792 bytes |
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