MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was identified as malicious by a machine learning classifier and ClamAV, flagging it as a phishing trojan. It contains numerous links, many pointing to WordPress installations and disposable domains, suggesting a link farm or SEO poisoning tactic. The document body is heavily obfuscated and unreadable, but the presence of multiple external URIs and compromised CMS upload links indicates a likely attempt to redirect users to malicious content or phishing pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9707
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://cructi.ru/uplcv?utm_term=inherit+the+wind+meaning
- https://samyenngochoang.com/wp-content/plugins/super-forms/uploads/php/files/aoamtrblan37rb5vegcmug71un/50237333821.pdf
- http://pamat.ro/UserFiles/file/65786648001.pdf
- http://111-orte.de/testarea/cwsCMSlight/media/files/96838461684.pdf
- http://parkhigh65.com/clients/4970/File/rusepusolunu.pdf
- https://rocksoliddesigns.biz/userfiles/file/tazizopasowumukowiv.pdf
- https://oklogistic.lv/upload/file/ganizibevapugabibutux.pdf
- http://www.tsssport.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608400249429c---57383894992.pdf
- http://victorylimo1.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608c632fa515d---93895991719.pdf
- http://ildungrice.com/fileupload/fckeditor/file/36574395419.pdf
- https://aterhesseg.com/up_image/file/19745988911.pdf
- http://topopentertainment.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b6542ea35c9---zopagizasej.pdf
- https://thealloywheelcentre.co.uk/wp-content/plugins/super-forms/uploads/php/files/58ae81e3539032720eac0cf0c83e211e/batiris.pdf
- http://atya.eu/files/file/71812813471.pdf
- https://www.lumisolar.pe/wp-content/plugins/formcraft/file-upload/server/content/files/160aa9b5bd1e5b---nifosowelamodibefo.pdf
- https://ikuseikyokai.jp/ckmedia//files/giwogelapub.pdf
- http://biosurfest.com/userfiles/files/litezisinowex.pdf
- https://coluer.ir/documents/file/gunufolominokagajamotukal.pdf
- https://www.skyline-recruiting.com/wp-content/plugins/super-forms/uploads/php/files/5c4daeba911da5b0d05a8f379cc2e732/39551549849.pdf
- https://californiaoptionsrealestate.com/wp-content/plugins/super-forms/uploads/php/files/b66ac7b243eba297320dadbc979a4893/98740955666.pdf
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/1608395c3d56d3---puzidadinalufifod.pdf
- http://visualpaint.com/wp-content/plugins/formcraft/file-upload/server/content/files/160984d43efa26---28853149193.pdf
- https://gfow.om/wp-content/plugins/super-forms/uploads/php/files/nh0m0nvtr17uff1f4df21mnnmh/neturipu.pdf
- https://hanahana.vn/media/ftp/file/ninujenerevu.pdf
- http://wawabed.pl/uploads/userfiles/file/81667954741.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00020fde.bin601a3d8ce89a5f57fbb465a7cecd475e119d6aee9cfe6952d91e389550141c1f |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x20FDE | 29980 bytes |
font_01_sfnt_off000252d1.bin5e7d51a8ec8312d4f2213b66dca91b31249af4e2dee317955a4747b03ac449b3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x252D1 | 19408 bytes |
font_02_sfnt_off000273ee.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x273EE | 16792 bytes |
font_03_sfnt_off00028c05.bindcaf0f3f0dbd6e556a899db147dcdc14d3659e8a69ed795c9da6c936d38ddeb2 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x28C05 | 10400 bytes |
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