MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1059.007 JavaScript
The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous external URIs and embedded links pointing to compromised WordPress sites, suggesting it functions as a link farm to distribute malicious content or phish users. The document body is heavily obfuscated and unreadable, preventing a deeper analysis of its specific lure.
Machine Learning
- Nyx PDF Classifier malicious score 0.9997
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://krisoc.ru/uplcv?utm_term=bootstrap+4+multi+step+form+wizard
- https://kfz-gutachter-oliver-schiller.de/wp-content/plugins/formcraft/file-upload/server/content/files/16093212351fcd---rojojuwosavasifuxosuzuf.pdf
- https://sckstone.com/wp-content/plugins/super-forms/uploads/php/files/ce10945ba1797b447968b112a8014791/xivejujifidaravovav.pdf
- http://pastoret.it/userfiles/files/41802146855.pdf
- https://www.18fire.com/wp-content/plugins/super-forms/uploads/php/files/045cd5c4653079b6d66138bee96dfa08/53743732445.pdf
- https://spazmedia.com/wp-content/plugins/formcraft/file-upload/server/content/files/16084dded460a2---9044483043.pdf
- http://es-umzuege-transporte.de/wp-content/plugins/super-forms/uploads/php/files/d5b6966c26775468218dd64198f81eec/nasujuvoruf.pdf
- https://xn--1--8kcai1ck2bs.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/b2f484a7358300d3dc59ec47bad6c677/63050015940.pdf
- http://svs-pm.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608308e4ce469---samilegatovevibegul.pdf
- https://gtsonline.nl/wp-content/plugins/super-forms/uploads/php/files/4o0j4des47m4i1a2qfdcnp6c7n/57958476717.pdf
- https://xn-----6kcabagcgfjsxjciriy6alkh6a7aqk.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/e35518bf62e30adc6e6ba16e12df3b75/10049132688.pdf
- http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/h36kkppberu2ig18p7s021s487/muzesotunu.pdf
- http://www.melloecastro.com/wp-content/plugins/formcraft/file-upload/server/content/files/160913f4c24133---koxanekisotudigeg.pdf
- https://www.beewellrx.com/wp-content/plugins/super-forms/uploads/php/files/tmp/84766308365.pdf
- http://www.stockholmswingallstars.com/wp-content/plugins/formcraft/file-upload/server/content/files/16075be298657f---7027590588.pdf
- http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609aea0f5631c---gefawijoma.pdf
- http://lalitas-thaimassage-spa.de/wp-content/plugins/formcraft/file-upload/server/content/files/160a32b6a9fba3---71435557726.pdf
- http://elitvorota.ru/f/file/faloxovuromisevixesav.pdf
- http://kayapaliinsaat.net/file/88742625158.pdf
- https://www.kiakaha.gr/wp-content/plugins/super-forms/uploads/php/files/pt01mdutvqmurocvcooeu7k0uk/64838632206.pdf
- https://petroblend.com/wp-content/plugins/formcraft/file-upload/server/content/files/160813e4dd3223---50299340047.pdf
- http://www.ascendercorp.com/
- http://www.ascendercorp.com/typedesigners.html
- 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://scripts.sil.org/OFL
Extracted artifacts 2
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010f21.bin47e05e7287dd45abf6b0a4b679fe45c90d5729f2b5e2baeb85e3ca8a241afadd |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10F21 | 5464 bytes |
font_01_sfnt_off000121c5.bin408bf0526205dabadff1aabb282bc7ea11120afc9ee89866cad9868701291e19 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x121C5 | 11916 bytes |
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