MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The heuristics reveal it functions as a link farm, directing users to compromised WordPress upload storage and disposable hosting sites, likely to facilitate malware distribution or phishing. The presence of a 'download' button lure further supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9961
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 https://laborke.ru/uplcv?utm_term=moral+letters+to+lucilius+audiobook
- http://wbbray.com/wp-content/plugins/formcraft/file-upload/server/content/files/160b1418e9b388---wupijefivokukuxideb.pdf
- https://www.hit-education.com/wp-content/plugins/super-forms/uploads/php/files/f7sp41pm9flhlfq0f5un2j0sok/28413831146.pdf
- http://www.saraviation.com/wp-content/plugins/formcraft/file-upload/server/content/files/160cd450034d50---posated.pdf
- https://donnasalon.ru/wp-content/plugins/super-forms/uploads/php/files/f1486ddc6d05c4f8ad694ece77abd5ba/64456011125.pdf
- https://legacydockandmarine.com/wp-content/plugins/super-forms/uploads/php/files/b4c03ab6c654ee0dd9f5a7bed41ae05f/sozibivokadej.pdf
- http://lavera.it/wp-content/plugins/formcraft/file-upload/server/content/files/160c143db93867---karokijojolosufir.pdf
- http://www.expo-hotel.com/english/wp-content/plugins/formcraft/file-upload/server/content/files/160949e693feb6---51659628370.pdf
- http://reclaimsplus.com/wp-content/plugins/super-forms/uploads/php/files/a134c864b139886d03fcfa1ca7623fe2/vutopotasixuriwa.pdf
- http://www.kevinbrooks.ca/wp-content/plugins/formcraft/file-upload/server/content/files/160b2e33de9798---xuxepudubijasusomokedol.pdf
- http://qunjl.com/userfiles/files/fawerigekilowopinofidel.pdf
- http://beulahcooleycollection.com/clients/870349/File/lafitivadadanerinavivene.pdf
- https://www.charroninc.com/wp-content/plugins/super-forms/uploads/php/files/92eeb68ccade9a500536607e46876827/34650908933.pdf
- http://erisalaw-chicago.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/17453115177.pdf
- https://certifiedmoversinc.com/wp-content/plugins/super-forms/uploads/php/files/bde0d7dd84ed18ac226a150a78bdfbae/ziwarulezugetawige.pdf
- http://okwmd.com/upload/fckeditor/file/xurabapetizurakawozu.pdf
- http://geose.ru/userfiles/file/25848666623.pdf
- http://ctyrkolky-gamax.cz/data/dokumenty/vejode.pdf
- http://www.cuadernos.in/wp-content/plugins/formcraft/file-upload/server/content/files/160bf94dd20ca3---37002043932.pdf
- http://grupogmec.com/wp-content/plugins/formcraft/file-upload/server/content/files/160703067aac46---12205749202.pdf
- https://lienlacanien.com/img_pages/file/45042472939.pdf
- http://lushexperiences.com/wp-content/plugins/formcraft/file-upload/server/content/files/16086f5af6f941---votigikidakowuka.pdf
- https://motelandratecuci.ro/userfiles/file/52495981115.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_off0000f166.binabb2dbd700e6a6a115ac09a1bd56792ed52136680104ab9c44f2ec6af54cecf3 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF166 | 10584 bytes |
font_01_sfnt_off000109b6.binfa6365f2fcc891c4d16035894afaf9e185fbee15f07ecb86cef41b7b922f32e5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x109B6 | 18304 bytes |
font_02_sfnt_off0001399e.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1399E | 16792 bytes |
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