MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document was flagged by ML classifiers and ClamAV as malicious, indicating a phishing or malware distribution attempt. It contains numerous embedded URLs, many pointing to compromised websites or disposable hosting, suggesting it functions as a link farm to distribute further malicious content. The presence of external URIs and link farms strongly indicates an attempt to redirect users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9980
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=how+to+connect+to+wifi+using+wps+pin+on+android PDF link annotation
- https://bda.ch/ckfinder/userfiles/files/88386002066.pdfIn PDF document text
- https://abril.pe/wp-content/plugins/super-forms/uploads/php/files/ku54m22imk6fi2if48enkfsdos/52580134810.pdfIn PDF document text
- https://gemma.lucien-sv.info/uploads/files/6135b14a77549.pdfIn PDF document text
- http://shijijiaming.net/filespath/files/20210920184443.pdfIn PDF document text
- http://www.jhannahs.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613ffbf748594---mepukaxubeloku.pdfIn PDF document text
- https://www.ciabrini-immobilier.com/wp-content/plugins/super-forms/uploads/php/files/s2ccaco2jc1o02e3f623o3orbl/kozisulexokir.pdfIn PDF document text
- http://sanga.asia/userData/board/file/18362439639.pdfIn PDF document text
- http://www.larucheapain.fr/ljk/file/tezawumugevovuf.pdfIn PDF document text
- http://xn--80aadq3ae7aa5k.xn--p1ai/upload/file/52295534839.pdfIn PDF document text
- http://kwiatmetal.pl/userfiles/file/53651437240.pdfIn PDF document text
- http://taaltoetsvo.nl/userfiles/file/vezakus.pdfIn PDF document text
- http://konsultacjenaukowe.eu/Upload/file/96494712054.pdfIn PDF document text
- http://aci-immobilier-douai.fr/userfiles/files/3458807716.pdfIn PDF document text
- http://kiapelhrimov.cz/UserFiles/File/turafepifatar.pdfIn PDF document text
- https://www.lang-mayer.de/wp-content/plugins/formcraft/file-upload/server/content/files/1614d33153325b---nekotagikimuvap.pdfIn PDF document text
- http://shethof.ch/cgi-bin/dynamisch/file/62362610095.pdfIn PDF document text
- http://www.alliance-bio.com/user_data/editor/ckfinder/core/connector/php/upload/files/49299929740.pdfIn PDF document text
- https://seeyounow.net/userfiles/file/70456651983.pdfIn PDF document text
- http://salman-is.com/userfiles/file/86152922668.pdfIn PDF document text
- http://kayapaliinsaat.net/file/kexibutaz.pdfIn PDF document text
- http://talleresjpg.es/img/file/mobokuligul.pdfIn PDF document text
- http://kwong-cheong.com/userfiles/vabimukatedonaletaz.pdfIn PDF document text
- http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
- http://purl.org/dc/elements/1.1/In PDF document text
- http://ns.adobe.com/pdf/1.3/In PDF document text
- http://ns.adobe.com/xap/1.0/In PDF document text
- http://ns.adobe.com/xap/1.0/mm/In PDF document text
- http://ns.adobe.com/xap/1.0/rights/In PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000c7ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xC7CA | 17332 bytes |
SHA-256: b9aa45a825dbe63dfb843a5539e5551f55b30da7caa948ed783085e479ecf81e |
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font_01_sfnt_off0000f409.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF409 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010c20.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C20 | 10928 bytes |
SHA-256: a31c8fced009ee16e130db666e5c1437f94de6e739732b5bcb60bd60f94d9040 |
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