MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by ML classifiers and ClamAV as malicious, containing numerous external URIs that form a link farm on disposable hosting. The primary URL, https://krisoc.ru/uplcv?utm_term=apk+download+game, suggests a lure for downloading applications. No scripts were extracted, but the PDF structure and numerous links indicate a phishing or malware distribution attempt.
Machine Learning
- Nyx PDF Classifier malicious score 0.9976
Heuristics 5
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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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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=apk+download+game PDF link annotation
- http://soft-pro.hr/upload/datoteke/bufadufunag.pdfIn PDF document text
- https://advantagelic.com/singhania/downloads/file/2342467506.pdfIn PDF document text
- http://pcserviszlin.cz/ckfinder/userfiles/files/miveseperijuropujaj.pdfIn PDF document text
- https://yastudio.net/wp-content/plugins/super-forms/uploads/php/files/c22f6db169de0cdcc581b23cb093386d/sudemixozaruxajusikigara.pdfIn PDF document text
- http://studiorumeo.it/userfiles/files/25491377494.pdfIn PDF document text
- http://elektrostroy.kz/ckfinder/userfiles/files/44739802137.pdfIn PDF document text
- https://gz-topstar.com/wp-content/plugins/super-forms/uploads/php/files/2e94416c80495d5f0591dafb00838e9f/zefumopiri.pdfIn PDF document text
- http://skkouty.cz/ckfinder/userfiles/files/zonawiz.pdfIn PDF document text
- http://liweisteel.co.th/ckfinder/userfiles/files/96211990764.pdfIn PDF document text
- http://pietrek.com/MARCUS/files/file/jeludufafidufuwi.pdfIn PDF document text
- http://xn--h1aaebajlcgx.xn--p1ai/sadm_files/nopenek.pdfIn PDF document text
- http://webinaris.training/ckfinder/userfiles/publics/files/21450632807.pdfIn PDF document text
- http://www.w.radeton.cz/ckfinder/userfiles/files/tubaxetipexerogudafap.pdfIn PDF document text
- https://grdr.org/paidel/ckfinder/userfiles/files/13084507688.pdfIn PDF document text
- http://studioarclab.eu/userfiles/files/60077986725.pdfIn PDF document text
- http://aumnat2car.com/ckfinder/core/connector/php/upload/files/zakiwodadesukuzizap.pdfIn PDF document text
- http://paletydozahrady.cz/ckfinder/userfiles/files/sakamujerolaxebax.pdfIn PDF document text
- http://le-lemniscus-incandescent.fr/ckeditor/upload/files/53220114435.pdfIn PDF document text
- http://gerocuki.hu/user/file/debuwenunivaledegema.pdfIn PDF document text
- https://rent-1.es/ckfinder/userfiles/files/13139281399.pdfIn PDF document text
- http://vakantie-noordlimburg.nl/ckfinder/userfiles/files/32188550737.pdfIn PDF document text
- https://www.creativetalentnetwork.com/ckfinder/userfiles/files/77849092469.pdfIn PDF document text
- https://thietkewebseo.com/webroot/img/files/joletusefizu.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_off0000b72b.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB72B | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000cf3d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xCF3D | 17496 bytes |
SHA-256: ffefe39260398f1e1eeb00748802d318d483d72f33be464aa12337aceb463457 |
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font_02_sfnt_off0000fbe4.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFBE4 | 10436 bytes |
SHA-256: 2311332f0ea59816d5fddc2344841d424c75c9358176c8c1904378f246cddace |
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