MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
This PDF was identified as malicious by ML classifiers and ClamAV, with a critical heuristic flagging it as Pdf.Phishing.Trojan. The file functions as a link farm, containing numerous URLs pointing to compromised WordPress sites, suggesting an intent to lure users to malicious content. The presence of multiple distinct hosts and the use of 'utm_term' parameters indicate a coordinated effort for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9953
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=identidades+trigonometricas+exercicios+pdf
- https://www.colours-of.com/wp-content/plugins/super-forms/uploads/php/files/ccp8c4ibhsqr4qn1oc10hkb86n/rimuto.pdf
- http://neodev.space/wp-content/plugins/formcraft/file-upload/server/content/files/1608533884b8da---86514323875.pdf
- http://influences-vegetales.eu/assets/Image//files/63682316061.pdf
- http://bubblesoflove.net/wp-content/plugins/formcraft/file-upload/server/content/files/160a6c26672f17---33624831716.pdf
- http://castrolmintabolt.hu/images/upload/file/93671946778.pdf
- https://groupunsur3.com/contents//files/pifimokifizazav.pdf
- https://dmddsgn.com/wp-content/plugins/super-forms/uploads/php/files/8006d28d287abb3d72547cc1d359f107/23707573624.pdf
- https://www.physioaktivkramer.de/wp-content/plugins/formcraft/file-upload/server/content/files/160ab332c572b1---nevefugelukizugipefivipip.pdf
- https://rpitrade.com/ckfinder/userfiles/files/pidojuwalojonuresolutare.pdf
- http://www.akutrans.com/wp-content/plugins/formcraft/file-upload/server/content/files/16092dd4164b0a---32995066918.pdf
- http://belst.by/upload/file/5622424120.pdf
- http://www.cenlafilm.com/siteuploads/editorimg/file/dixiluvuwetobexisonogif.pdf
- https://www.espymetcalf.com/wp-content/plugins/formcraft/file-upload/server/content/files/160913ad38e581---vakubikifesatiwizikenezob.pdf
- https://autoschiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a2a0db5641e---fewodikiwunaxifizeje.pdf
- http://nd-58.ru/wp-content/plugins/super-forms/uploads/php/files/ae6f7b492f960dd4f5692de603785533/xotetarojesibasogojemete.pdf
- http://shiokuda1.com/contents//files/41906988636.pdf
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/b2f9e353ff8d9d899958acd2f6f53031/tusajeveridegiketavoveje.pdf
- https://studiogreenwich.ru/wp-content/plugins/super-forms/uploads/php/files/0899e88cd2c83680957d22133d348608/sosogafimedibu.pdf
- http://xn--82cac8d3ajrc0gd0bo4a7nf3qg.com/userfiles/files/13360828576.pdf
- http://viorina-deko.com/images/file/51208941548.pdf
- http://ccswcd.com/userfiles/file/josofel.pdf
- http://stopasbestos.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1612c554f5c3cc---fusulowir.pdf
- https://www.qlsny.com/wp-content/plugins/super-forms/uploads/php/files/78d629e058fc487579315b00f498454d/18984835394.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_off0000bd81.bin6ca7bab0dcc95b06456959c0fa3af875574980e9e49fd9d0437610539bb32bb1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD81 | 18476 bytes |
font_01_sfnt_off0000ed91.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xED91 | 16792 bytes |
font_02_sfnt_off000105a8.bin236e3d4f682b47dd49567d9c7e49389a1294bd7ad9d985149c6c73a72dc0f6c5 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x105A8 | 10972 bytes |
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