MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous URLs, many hosted on compromised websites or disposable domains, indicating a link farm designed to redirect users. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. The presence of multiple external URIs and a link farm heuristic points towards an attempt to lure users to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://ketchas.ru/uplcv?utm_term=blues+guitar+book+pdf PDF link annotation
- http://isystem.hu/ckfinder/userfiles/files/golawuked.pdfIn PDF document text
- http://diamond6ranch.com/userfiles/file/gezipep.pdfIn PDF document text
- http://noospc.ru/SITE/files/editor/file/fubefasaba.pdfIn PDF document text
- http://onishi-kyosendo.jp/archive/tamuzerukag.pdfIn PDF document text
- http://grawerlik.pl/userfiles/file/14156720271.pdfIn PDF document text
- http://vodova51-53.cz/files/43359751071.pdfIn PDF document text
- http://ddaengshop.com/ckupload/files/nedutupudifuxozidipogaxi.pdfIn PDF document text
- http://www.justgiveahand.org/wp-content/plugins/formcraft/file-upload/server/content/files/1607123a1519be---suposijoxuwekujenosin.pdfIn PDF document text
- https://visualarchive.bg/files/50658415277.pdfIn PDF document text
- https://vigiweb.cl/dinamicos/files/file/jonorupidirokalubepokapi.pdfIn PDF document text
- http://leakefamilyreunion.com/clients/63964/File/zutitudikagadonusasati.pdfIn PDF document text
- https://copab.tn/216mag.svn/uploads/files/75957527018.pdfIn PDF document text
- https://agsposure.org/wp-content/plugins/super-forms/uploads/php/files/5230fec68406308e166f92f3631af75b/vazalaravisupem.pdfIn PDF document text
- https://www.euroservicemilano.it/wp-content/plugins/formcraft/file-upload/server/content/files/16073b7ca1122a---52737349351.pdfIn PDF document text
- https://ooo-kenk.ru/userfiles/file/kofodib.pdfIn PDF document text
- http://agenziaimmobiliarecannavo.eu/userfiles/files/43903832631.pdfIn PDF document text
- http://antwerp-rentals.com/wp-content/plugins/formcraft/file-upload/server/content/files/16072f63857b5e---nigamijajowumitojutugid.pdfIn PDF document text
- https://broadstripe.com/wp-content/plugins/super-forms/uploads/php/files/0a67b5611d36c7da3aa76a392721e762/69552806075.pdfIn PDF document text
- http://alituncer.com/userfiles/file/sonowajaj.pdfIn PDF document text
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/20f021dc086f00637b7de8f85a8346e3/kezagutukavadojekika.pdfIn PDF document text
- http://www.circoloaletrium.it/wp-content/plugins/formcraft/file-upload/server/content/files/160a7fc69623c8---nixaremutu.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_off0000b7ed.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB7ED | 15516 bytes |
SHA-256: ed94d10aec530ef3b6669e9776fa131515ad240fd944904dd2aafa2082397ca5 |
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font_01_sfnt_off0000df15.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDF15 | 10956 bytes |
SHA-256: cbf4f4a05158006239fc039ae87e4712e36a1c06bc3c799c420af8c4febe6977 |
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font_02_sfnt_off0000f841.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF841 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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