MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF document is classified as malicious by ML and ClamAV, indicating a high likelihood of malicious intent. It functions as a link farm, containing numerous URLs pointing to potentially compromised websites or disposable hosting, suggesting a phishing or malware distribution scheme. The presence of external URIs and link farm heuristics strongly supports this attack pattern.
Machine Learning
- Nyx PDF Classifier malicious score 0.9982
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+create+a+button+in+android+studio PDF link annotation
- http://xingzhongjing.com/userfiles/file/20210911030732_821684301.pdfIn PDF document text
- http://stefanourso.com/public/userfiles/file/gomezuzapasawamawarikaked.pdfIn PDF document text
- https://precisionautoandac.com/wp-content/plugins/super-forms/uploads/php/files/b16c4401d252f6129da3c4ff54b8bfc0/tuwivulani.pdfIn PDF document text
- https://sleepthai.com/piceditor/file/legijovijugenisewe.pdfIn PDF document text
- https://culturasiapamplona.com/guiarte_userfiles/files/fapatinogakijubuduro.pdfIn PDF document text
- http://www.tractortools.cz/ckfinder/userfiles/files/wagorixijapogorowowo.pdfIn PDF document text
- https://xn----7sbabak5acz7byau.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/c5ad87f29df0a2d4e54b1c9bd4d3200a/falodotuw.pdfIn PDF document text
- https://812423.situshoki1.com/contents/files/gogaxerukakozabigomiganu.pdfIn PDF document text
- http://vpecargo.com/userfiles/file/fononina.pdfIn PDF document text
- http://lev-steklo.ru/userfiles/file/pukuked.pdfIn PDF document text
- https://vanrun-it.nl/userfiles/files/jupitumopujitufimuzajonef.pdfIn PDF document text
- https://fotofidelity.cz/userfiles/file/17726801015.pdfIn PDF document text
- https://atkarisuli.hu/userfiles/file/6625396188.pdfIn PDF document text
- https://am-system.eu/ckfinder/userfiles/files/mumoxemena.pdfIn PDF document text
- http://vidol.eu/userfiles/file/93685282336.pdfIn PDF document text
- http://xn--80aaaghhaztbcd1agjgbccsgfftf.xn--p1ai/pict/file/polupe.pdfIn PDF document text
- http://etpatatietpatata.com/userfiles/files/21039793158.pdfIn PDF document text
- https://www.andeanskyline.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613cf8e9c7ee9---13795135450.pdfIn PDF document text
- http://www.jobibon.com/admin/userfiles/file/70894641915.pdfIn PDF document text
- http://videoacceso.com/wp-content/plugins/formcraft/file-upload/server/content/files/16136958fbae3c---fevukizofufabenilu.pdfIn PDF document text
- https://yarsan.ru/wp-content/plugins/super-forms/uploads/php/files/86cb64be079e23d8cd7b053e6d73fd8c/18611827958.pdfIn PDF document text
- https://motty-etai-sharon.com/files/files/vokiniwefexagovixobawipo.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_off0000b10d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xB10D | 14356 bytes |
SHA-256: 3d6fb4c7aa485ab697f75a045142cfd92fcda018635d1fe5b8324d8f47fd7118 |
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font_01_sfnt_off0000d4e7.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD4E7 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ecfe.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xECFE | 10636 bytes |
SHA-256: b6e3a1008803c17ce4a5036396c6357ca91b754e7c0283c367a460bd6530a6b8 |
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