MALICIOUS
126
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic suggests it functions as a link farm, directing users to numerous distinct hosts, one of which is a suspicious URL containing 'utm_term=stronghold+crusader+2+android'. While no scripts were explicitly extracted, the presence of embedded URLs and the nature of the link farm heuristic strongly suggest a phishing or malware distribution vector, likely leveraging embedded JavaScript for redirection.
Machine Learning
- Nyx PDF Classifier malicious score 0.9973
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://crewmak.ru/uplcv?utm_term=stronghold+crusader+2+android PDF link annotation
- https://tranthachcaodanang.com/uploads/image/files/gisaxaxejixovun.pdfIn PDF document text
- http://oilmachineydy.com/d/files/dixakupusuwugu.pdfIn PDF document text
- http://cioccolatogallucci.it/userfiles/file/43275599790.pdfIn PDF document text
- http://smart.sut.ac.th/tsme/src/lib/ckfinder/userfiles/files/kiwifexusomifofetizukemur.pdfIn PDF document text
- http://crocepadrekolbe.it/userfiles/files/97875931571.pdfIn PDF document text
- https://infrastone.com/userfiles/files/fexomefutelovusam.pdfIn PDF document text
- http://studiobaliva.eu/userfiles/files/fusirevesoxotaxoromew.pdfIn PDF document text
- http://luberoff.com/userfiles/file/87393566344.pdfIn PDF document text
- https://www.champagne-auge-dascier.com/ckfinder/userfiles/files/wafiritomipufurexu.pdfIn PDF document text
- http://fishtech.org/uploads/userfiles/file/file/kolosesovimetomufixux.pdfIn PDF document text
- http://niktid.ru/userfiles/file/24429358660.pdfIn PDF document text
- http://bretagne.annuaire-regional.com/ckfinder/userfiles/files/xeposom.pdfIn PDF document text
- http://www.myhhsi.com/wp-content/plugins/super-forms/uploads/php/files/869a49f4a5e4c91f7a390feae779f7f7/8787448798.pdfIn PDF document text
- http://xn--or3bi2da319p.com/upload/fckeditor/file/lijoxode.pdfIn PDF document text
- https://dintek.eu/uploads/file/15960714607.pdfIn PDF document text
- http://boletos.luzservicos.com/ckfinder/userfiles/files/pixevebaxo.pdfIn PDF document text
- https://jakspravnenapsa.cz/userfiles/file/87486775304.pdfIn PDF document text
- http://expresskaliski.info/file/18993753873.pdfIn PDF document text
- http://miyisz.com/mingyi/images/userfiles/file/3411240193.pdfIn PDF document text
- https://spotiverify.com/ci/userfiles/files/lefitiwuwegemuwuk.pdfIn PDF document text
- http://boldogelet.hu/media/18428211838.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_off0000ad50.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xAD50 | 16456 bytes |
SHA-256: 538ac0ed3ac7ddf4a46619831db26e4e0144be1f69907f8df4bff8eb1fd7e3cc |
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font_01_sfnt_off0000d785.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD785 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off0000ef9c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEF9C | 10944 bytes |
SHA-256: 564e5fdbe907b9394b1841efe37c3c91a8dc93f9055a4ebc6a2537ce32879e90 |
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