MALICIOUS
186
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The file is a PDF that contains numerous embedded URLs, many of which are hosted on disposable domains and appear to be part of a link farm. The ML classifier and ClamAV detection strongly indicate maliciousness, specifically phishing. The presence of PDF_SEO_DISPOSABLE_LINK_FARM and SE_PASSWORD_ARCHIVE_LURE heuristics suggests the document is designed to trick users into downloading further malicious content, possibly by providing a password for an archive.
Machine Learning
- Nyx PDF Classifier malicious score 0.9975
Heuristics 7
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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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Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LUREDocument gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
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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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QR-code redirect lure medium SE_QR_LUREDocument instructs the user to scan a QR code with a phone — consistent with QR phishing, but also common in legitimate documents
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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=remove+pin+from+android+phone PDF link annotation
- https://asztromiskolc.hu/ckfinder/userfiles/files/xalopixilimileba.pdfIn PDF document text
- http://hmsendo.pl/uploads/editor/file/41929183965.pdfIn PDF document text
- http://195exim.com/datas/files/nenusununo.pdfIn PDF document text
- https://www.funes.gob.ar/ckfinder/userfiles/files/23877660558.pdfIn PDF document text
- https://defi128.com/userfiles/files/goxoxaguzeruturunelom.pdfIn PDF document text
- http://lawfirm.vn/MINH/user_files/file/98185904644.pdfIn PDF document text
- http://chinalabware.net/d/files/pabevajegoxulakimaveri.pdfIn PDF document text
- https://themodernla.com/wp-content/plugins/super-forms/uploads/php/files/1701feb94d5e76fdaf48378967457e53/lukanadekirokubanariw.pdfIn PDF document text
- https://bywuf.org/upload/editor/files/julonusipunevekomalo.pdfIn PDF document text
- http://xn----7sbev0bhje.xn--p1ai/images/news/file/jofoxomumifurosegebevu.pdfIn PDF document text
- http://torby.kbo.pl/ckfinder/userfiles/files/wazagim.pdfIn PDF document text
- http://fioredda.com/userfiles/files/bonerexizovigeda.pdfIn PDF document text
- https://boucherienabli.com/uploads/FCK_files/file/favudejakuvigufiwoka.pdfIn PDF document text
- http://esipro.lu/userfiles/file/vukufuzuji.pdfIn PDF document text
- http://appextskihjthj.handysociality.com/upload/files/78472355653.pdfIn PDF document text
- http://geose.ru/userfiles/file/2461280576.pdfIn PDF document text
- http://wwstationery.com/files/file/zimovavoxibedidaguxabetij.pdfIn PDF document text
- https://bdata.vn/upload/files/607126002.pdfIn PDF document text
- http://akvarium-olbrecht.cz/upload/file/xasuxanu.pdfIn PDF document text
- http://colorfulmedia.de/fotki/fotki/file/90023747721.pdfIn PDF document text
- http://metapolar.hu/tmp/bexije.pdfIn PDF document text
- http://sor1310.com/userfiles/file/sarerafafigoxegekevo.pdfIn PDF document text
- http://ambvetbrashersclavoghisu.eu/userfiles/files/naxowuvese.pdfIn PDF document text
- https://www.traitagri-solutions-alternatives.fr/ckfinder/userfiles/files/lofozoduvomuzozibokux.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_off0000d64d.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xD64D | 10560 bytes |
SHA-256: 74b74319a739c6de08c3879bb290a62c118f725e6ad4f00a4e33aaa0389e105d |
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font_01_sfnt_off0000ee21.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xEE21 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_02_sfnt_off00010633.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10633 | 18012 bytes |
SHA-256: f95bcee20668362fa7fb12c4effdc84dd37dfaa39eff880d4f27aad4aea463d4 |
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