MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript, which is a common technique for executing malicious code or redirecting users. The numerous external URIs, many pointing to compromised CMS uploads or disposable hosting, suggest a link farm designed to distribute malware or lead to phishing pages. The ClamAV detection and ML classifier strongly indicate malicious intent.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
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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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 https://inwebjor.ru/uplcv?utm_term=market+presence+meaning
- http://hyperasp.net/userfiles/file/wimokagojupo.pdf
- https://plumcourse.com/wp-content/plugins/super-forms/uploads/php/files/4694281a0359953d33d8d767288446e7/53828416577.pdf
- https://menlopark.com/wysiwygfiles/file/fupobojeludonovoxabifo.pdf
- https://mission4recruitment.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607a99dbc6ac7---83324519442.pdf
- http://blbr365.com/userfiles/file/1623959299.pdf
- http://guowangcable.com/d/files/60725346443.pdf
- https://wamsconference.com/wp-content/plugins/super-forms/uploads/php/files/7fb93a9801e13be04e401c6dacb41db0/94564919203.pdf
- http://intechsol.kz/wp-content/plugins/formcraft/file-upload/server/content/files/160940a6e787a9---taxarofabu.pdf
- http://dgn89reunion.com/clients/862287/File/sorofusexugu.pdf
- https://louvre.lv/res/wysiwyg/file/mufoja.pdf
- https://stagerightstaging.com/wp-content/plugins/super-forms/uploads/php/files/b817c0430973a0f5d943d40d20ee13ef/kidurusadaf.pdf
- http://k-ookuma.com/js/upload/files/73917827894.pdf
- http://ipjanah.ir/wp-content/plugins/super-forms/uploads/php/files/628ahvf1akubvt6gm8n81udai4/wizejanetatulifisikak.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/16091897513d63---patadewazijopekokuna.pdf
- https://prsnashville.com/wp-content/plugins/super-forms/uploads/php/files/40478e9a4f3ab7cf8979d398f6185ca8/zukewipukegizobudo.pdf
- http://argyleliquidations.com/userfiles/files/katolox.pdf
- http://cropscipublisher.com/files/upfiles/file/ramuvajig.pdf
- https://www.sussexweddingservices.co.uk/wp-content/plugins/formcraft/file-upload/server/content/files/1606e48f50deb7---tepozuzefotusajewavo.pdf
- https://www.hadlowsecurityshutters.com/wp-content/plugins/super-forms/uploads/php/files/1f60ba113a14cbed11c4c26e525bffb8/disabizopovemuvajixa.pdf
- http://www.jesuseslaroca.org/wp-content/plugins/formcraft/file-upload/server/content/files/16072b4588de69---40656554281.pdf
- https://refundsrefunds.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b9e55d7d8ef---41225896024.pdf
- https://doktor-ara.com/userfiles/files/mivakalus.pdf
- https://acronimocostanzo.com/userfiles/file/74846826607.pdf
- 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_off0000e9cf.bin4f45c832b255a91ca0440235b3d2f9ecf293a5dd5cdd86bf4d0d99fbdcd34083 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE9CF | 10636 bytes |
font_01_sfnt_off00010230.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10230 | 16792 bytes |
font_02_sfnt_off00011a42.binb7d1e4d472208755122bf92f849514784e1b2c6fd06a4d42fe0ac8022a0d2902 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11A42 | 16928 bytes |
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