MALICIOUS
164
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, many of which point to compromised CMS uploads or are part of a link farm on disposable hosting. The embedded JavaScript likely facilitates the redirection or download of further malicious content, contributing to a phishing or malware distribution attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9948
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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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=funny+icebreaker+games+for+adults
- https://www.intermediastudios.com.mx/wp-content/plugins/super-forms/uploads/php/files/ec0b9271f938966985991f9d6bb99508/nekizalugabelabemug.pdf
- http://epoch-making.jp/js/upload/files/22937038969.pdf
- http://www.hollyskauaicondo.com/wp-content/plugins/formcraft/file-upload/server/content/files/160bfde1598201---wuwiwasiw.pdf
- https://www.llgnjinc.com/wp-content/plugins/super-forms/uploads/php/files/a6760d00d253f2b8e33149ffd48cd246/guxajukamovez.pdf
- https://www.epicbrands.co/wp-content/plugins/super-forms/uploads/php/files/c8f21ede6106ead584e8a9515f149c41/jiriwa.pdf
- https://www.sblending.com.au/wp-content/plugins/formcraft/file-upload/server/content/files/16077b692da698---zaruvovorikelekuvis.pdf
- http://nek.ua/wp-content/plugins/formcraft/file-upload/server/content/files/1607faa598ec65---texesuwosul.pdf
- https://travelstore.tn/userfiles/file/55414244296.pdf
- http://www.finanzanlagen-honorarberatung.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609e6d4ac7519---20089516444.pdf
- https://myhoorayhealth.com/wp-content/plugins/super-forms/uploads/php/files/du67p0bccmosb7smjl3v86eg01/63455908947.pdf
- https://akarchlight.com/wp-content/plugins/super-forms/uploads/php/files/d8eb000febdf8fa68345f0875b505465/88171221872.pdf
- https://tecsal.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160730bf64afab---54698241339.pdf
- http://mundori.com/js/ckfinder/userfiles/files/pivosinedukimiwedovevo.pdf
- http://heilpraxis-pankow.de/wp-content/plugins/formcraft/file-upload/server/content/files/1609eaecb21e12---45947215902.pdf
- https://itacademyindia.com/ckfinder/userfiles/files/widimalesunujirakorela.pdf
- https://krimgranit.ru/wp-content/plugins/super-forms/uploads/php/files/8748114f8c501b715ad8695fa2d25814/sowusi.pdf
- https://swotin.com/wp-content/plugins/formcraft/file-upload/server/content/files/1607d9afae2c86---sizikugujuwago.pdf
- https://socialacademy.gr/wp-content/plugins/super-forms/uploads/php/files/39a11b8bdd936d3c8e2cf43874434dd1/vawidegedifafaxa.pdf
- http://changdahk.com/upload/jalesuri.pdf
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/31rro7um6bdruh2ekmnfjb2j5c/3122482282.pdf
- http://phillipwhiting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1608da40e4b275---65460116538.pdf
- http://abapaposentados.com.br/wp-content/plugins/formcraft/file-upload/server/content/files/160bd566578a14---fajufefopafokizulij.pdf
- http://asesorialuishervas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160a3e318bed7c---lefuf.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_off0000fac6.binede8c1b971d767b57a4c165ff96da0a42f2c13514e67dcee8aea2c0443f166a6 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFAC6 | 11240 bytes |
font_01_sfnt_off000114f2.bina2234db937e1577a35100e48bf4aa7421f8aae4d79fff79344c02f0224d2a0be |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x114F2 | 17160 bytes |
font_02_sfnt_off000141d3.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x141D3 | 16792 bytes |
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