MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF file was identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous external URIs, many of which point to compromised WordPress sites, suggesting a link farm designed to redirect users to malicious content. The document body is heavily obfuscated, preventing analysis of its specific intent beyond the link farm behavior.
Machine Learning
- Nyx PDF Classifier malicious score 0.9951
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://archism.ru/uplcv?utm_term=best+way+to+watch+hobbit+and+lord+of+the+rings
- http://training-solutions.ro/wp-content/plugins/formcraft/file-upload/server/content/files/1606e55713995a---rapozetezejekomirosu.pdf
- http://zonwering-belgie.com/ckfinder/userfiles/files/vifavome.pdf
- https://marblobathware.com/app/webroot/img/files/jopimijabajemejo.pdf
- http://chi-kara.net/userfiles/file/92116397560.pdf
- http://kibunajcc.com/ckfinder/userfiles/files/kenefopufetewajodabu.pdf
- https://www.conkite.com/wp-content/plugins/super-forms/uploads/php/files/3e56a0f714daae0d2578e0ee3c1f888a/vokagu.pdf
- http://sameiroeventos.pt/ficheiros/73640359687.pdf
- https://dipinkrishna.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607146ec5bcee---xepujixikivasepuwux.pdf
- http://bizwd.com/wp-content/plugins/formcraft/file-upload/server/content/files/160df085941073---42858584530.pdf
- https://coachtourbusrental.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072fd242bd72---71814987093.pdf
- http://botanicgardenscafe.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/160933c2f6c6dc---81765318238.pdf
- http://aplus.to/userfiles/file/rizimufakegejavinanidawex.pdf
- http://pericosrentcar.com.mx/wp-content/plugins/formcraft/file-upload/server/content/files/160b22b5125169---tases.pdf
- https://www.bountyvacation.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092ac5dcc9b0---15948140302.pdf
- https://smoothnomad.com/wp-content/plugins/super-forms/uploads/php/files/9u6tg9fapu1af8olnl7t3ovcns/ragadobulojozenusodixu.pdf
- https://www.entornopublicitario.com/wp-content/plugins/super-forms/uploads/php/files/e7e275e3483b2bba65a5b998bc9a0fd3/fifidujosusenadeb.pdf
- http://skylineidaho69.com/clients/c/c7/c7306e0a9cc1d421caefa9c307ca601f/File/guroxinutabidofor.pdf
- http://fqcycpa.com/jingkelun/userfiles/files/20210617120545.pdf
- http://coffee33.ru/archive/file/kiposunufuxif.pdf
- http://fructusartis.com/i/File/berebipunoletusugorakef.pdf
- https://www.tifdip.com/wp-content/plugins/formcraft/file-upload/server/content/files/160c18dbad9b7d---22875319515.pdf
- http://winso.tw/userfiles/file/jarujuge.pdf
- http://summitremodelinginc.com/userfiles/files/pevelesezilunulig.pdf
- https://noddy.nu/images/file/pepubitarapi.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_off0000e61b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE61B | 16792 bytes |
font_01_sfnt_off0000fe2d.bined9c571c38f6800b35a8f0e852712457d80a39958ea89ae5a219dea46eafdbf4 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFE2D | 17032 bytes |
font_02_sfnt_off00012a28.bincafedd670ee263f59ea578ff60b559dabf4933922821473ee0424d0414d5ac3a |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12A28 | 11148 bytes |
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