MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF contains numerous embedded URLs, many pointing to compromised websites or disposable hosting, indicative of a link farm. Heuristics like 'PDF_SEO_DISPOSABLE_LINK_FARM' and 'PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM' strongly suggest a malicious intent to redirect users. The ML classifier and ClamAV detection further corroborate its malicious nature, likely for phishing or malware distribution.
Machine Learning
- Nyx PDF Classifier malicious score 0.9956
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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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://oniceh.ru/uplcv?utm_term=shelby+county+tag+renewal+cost PDF link annotation
- https://cr2tek.com/userfiles/Proj_Name/files/nogowevakorawudarekog.pdfIn PDF document text
- https://nieruchomoscikomercyjne.co/files/file/vagalaxujorel.pdfIn PDF document text
- http://irc.kz/data/content/file/suzuridovodibepu.pdfIn PDF document text
- https://paloaltospeakerseries.com/wp-content/plugins/super-forms/uploads/php/files/89a9b02a9c7f40aee4ee3b337359c7bb/febubanowoguxojaji.pdfIn PDF document text
- http://kuwaited.com/cote_dor_import/admin/ckfinder/userfiles/files/83538955002.pdfIn PDF document text
- http://hangnhatbanonline.com/upload/files/6062349415.pdfIn PDF document text
- http://fitsiluet.cz/data/file/4650296135.pdfIn PDF document text
- https://metnar.pl/web/uploads/files/vawutapiguloledu.pdfIn PDF document text
- http://accronline.com/userfiles/file/nonafe.pdfIn PDF document text
- http://www.heatandgas.com/EditorImages/file/tataziwutopapur.pdfIn PDF document text
- http://brmhn.com/userfiles/file/20210921020923_mxwg7y.pdfIn PDF document text
- http://goldartline.ua/userfiles/file/88108830609.pdfIn PDF document text
- https://gpuhub.net/wp-content/plugins/super-forms/uploads/php/files/7me9m7hv3jgqbfnlouvel8f1lk/18252369022.pdfIn PDF document text
- https://wodepcb.cn/uploadfiles/files/fawibulomenulu.pdfIn PDF document text
- https://www.elektrobetrieb-scholz.de/wp-content/plugins/formcraft/file-upload/server/content/files/16139f0bd35a10---63183663804.pdfIn PDF document text
- http://bouwbedrijfansing.nl/userfiles/file/dudorebonopuk.pdfIn PDF document text
- http://gtlfuelmarine.com/userfiles/file/ragoleguw.pdfIn PDF document text
- http://phanphoiongnhuahoasen.vn/upload/files/92683438648.pdfIn PDF document text
- http://calisnt.com/uploads/files/77366286711.pdfIn PDF document text
- https://kristinanamaste.eu/files/mawidolesiriforijabituvaj.pdfIn PDF document text
- https://bunian-co.com/other_files/File/lafepitalib.pdfIn PDF document text
- https://unique.global/wp-content/plugins/super-forms/uploads/php/files/42647fbc486ebf642bad02e4fb858f94/54578068276.pdfIn PDF document text
- http://drentmedischadvies.nl/uploads/files/welisekutigawexiludepa.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_off0000b3cd.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB3CD | 10932 bytes |
SHA-256: 478b148cad4483f88c6475cb673b4e01929ee15b0846f992702c902ce3380e5a |
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font_01_sfnt_off0000cd3b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCD3B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000e54d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE54D | 16836 bytes |
SHA-256: b6d6fc5b7424c6c6178634e16efcc7be5f8aade3ac97a6366541d1171773490e |
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