MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains numerous embedded URLs, many of which point to compromised WordPress uploads or disposable hosting, forming a link farm. Heuristics indicate this is a common tactic for phishing or malware distribution. The ML classifier and ClamAV detection strongly suggest malicious intent, likely involving redirection to malicious sites.
Machine Learning
- Nyx PDF Classifier malicious score 0.9947
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://pistant.ru/uplcv?utm_term=active+and+passive+voice+multiple+choice PDF link annotation
- http://comp-art.ru/userfiles/file/nizedowafetisod.pdfIn PDF document text
- http://www.appsolutely.sg/wp-content/plugins/formcraft/file-upload/server/content/files/16151a53e9e6e2---velekakuzagebujovolujero.pdfIn PDF document text
- http://dailitara.lt/bites/uploads/file/71254506451.pdfIn PDF document text
- http://murielbellhomes.com/userfiles/files/niwajibon.pdfIn PDF document text
- https://la-klamm.org/Files/files/3279839117.pdfIn PDF document text
- http://divelife.kz/files/file/doturagip.pdfIn PDF document text
- http://cpk.by/ckfinder/userfiles/files/vazajozoxexiwetazafi.pdfIn PDF document text
- http://isisthailand.org/file_media/file_image/file/59778304725.pdfIn PDF document text
- http://cuacuontoanthang.com/media/file/66581244886.pdfIn PDF document text
- https://sdhouse.info/ckfinder/userfiles/files/sokitakozene.pdfIn PDF document text
- https://cvenhancer.com/wp-content/plugins/super-forms/uploads/php/files/666b80a3a9229ec8a6509aff78d69f74/52910744486.pdfIn PDF document text
- http://restavratorstvo.com/ckfinder/userfiles/files/xulozekato.pdfIn PDF document text
- https://leganordavigliana.com/uploads/file/verifenovefotugu.pdfIn PDF document text
- https://marjoyunlar.com/calisma2/files/uploads/80558528575.pdfIn PDF document text
- https://mosoptagro.ru/wp-content/plugins/super-forms/uploads/php/files/265e61e5f5d6e0d0c690852a98586bcc/6461230952.pdfIn PDF document text
- http://www.awakohchang.com/image/upload/File/2375783934.pdfIn PDF document text
- http://sarahscupcakery.com/wp-content/plugins/formcraft/file-upload/server/content/files/161421f821bcd3---rozazoforedufuzuniki.pdfIn PDF document text
- http://cbstav.cz/file/26884313736.pdfIn PDF document text
- https://erdenetpost.mn/userfiles/files/povab.pdfIn PDF document text
- http://redeyeldn.com/userfiles/file/42738960226.pdfIn PDF document text
- http://alteredcompta.com/buddha/ckfinder/userfiles/files/womoxoxosup.pdfIn PDF document text
- http://sinocelltech.com/filespath/files/20210917011051.pdfIn PDF document text
- https://littleitalypizzany.com/nbloom/fckuploads/file/lifusomugepene.pdfIn PDF document text
- https://vitanov.rs/files/210740843.pdfIn PDF document text
- http://valsadindustries.com/userfiles/file/fopikodivifomezafubewosix.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_off0000bd27.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xBD27 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000d53e.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD53E | 10828 bytes |
SHA-256: 3810b619962ec8da0ca27ab95e6464d7deb5a80c41a9c4e95cf4042db3a9d035 |
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font_02_sfnt_off0000ee12.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE12 | 17500 bytes |
SHA-256: 4ec1efb5805feaeb680a6dbcfe24224b66eacbaef75f9efd355b376b335fcc11 |
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