MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1140 Deobfuscate/Decode Files or Information
The sample is a PDF document containing embedded JavaScript, flagged by ML classifiers and ClamAV as malicious. It exhibits characteristics of an MFA or one-time code harvesting lure, aiming to trick users into compromising their accounts. The presence of numerous external URIs, many pointing to disposable hosting, suggests a phishing campaign designed to distribute malicious payloads or redirect users to credential harvesting pages.
Machine Learning
- Nyx PDF Classifier malicious score 0.9955
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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MFA / one-time-code harvesting lure high SE_MFA_LUREDocument asks for a one-time code, authenticator approval, or MFA confirmation — consistent with credential phishing kits that steal session tokens or abuse multi-factor authentication
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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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Embedded JS stream low PDF_JSPDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
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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://smidgel.ru/uplcv?utm_term=how+to+attach+file+in+messenger+in+android PDF link annotation
- https://linhngapt.vn/upload/files/vusemalinovadubi.pdfIn PDF document text
- https://abss.pt/userfiles/file/47057143108.pdfIn PDF document text
- http://yuanhebiotech.com/upload/files/10548645361.pdfIn PDF document text
- http://www.erealitysolutions.com/tennisontario/assets/appsadmin/js/ckfinder/userfiles/files/mefaku.pdfIn PDF document text
- http://www.anclupnapoli.it/userfiles/file/tudoduwus.pdfIn PDF document text
- http://ladyvenus.it/userfiles/files/13866463398.pdfIn PDF document text
- http://udokutscher.de/gfx/userfiles/files/revizizax.pdfIn PDF document text
- http://bharatdarshan.net/rgroup/ckfinder/userfiles/files/15383666522.pdfIn PDF document text
- https://avphunter.ro/ckfinder/userfiles/files/nawikinovujekiduteb.pdfIn PDF document text
- http://darstin.com/userfiles/files/78192416264.pdfIn PDF document text
- http://ellenia3.eu/userfiles/files/zilukewosubezaxexa.pdfIn PDF document text
- https://jobtiara.com/files/files/sawugas.pdfIn PDF document text
- http://rsst77.ru/upload/files/26489757906.pdfIn PDF document text
- https://dalton-english.com/userfiles/file/38549945439.pdfIn PDF document text
- http://skyrun-arser.com/js/fckeditor/editor/filemanager/connectors/php/connector.php/upfiles/file/2109030750422407555s2rvc.pdfIn PDF document text
- http://tuvanluatdanang.com/upload/ck/files/80170240108.pdfIn PDF document text
- https://rtquery.reitoken.org/Coaching123/images/files/30595847628.pdfIn PDF document text
- http://hebammenglueck.de/ckfinder/userfiles/files/sulesubegigemamonogege.pdfIn PDF document text
- http://aldobini.it/userfiles/files/puxebikesumenujimutigi.pdfIn PDF document text
- http://webinaris.net/ckfinder/userfiles/publics/files/sipeva.pdfIn PDF document text
- http://erpos.sk/data/files/94869936797.pdfIn PDF document text
- http://christmaslandint.com/userfiles/95357094922.pdfIn PDF document text
- http://bainihu.com/upfiles/editor/files/bewowovorubojobamivuxipe.pdfIn PDF document text
- http://xn--80ackbssfuieecff0e8c.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/vsjgoaso0hulvcin11pfc3h3l2/jesakuwarabudum.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_off0000e0b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE0B8 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000f8ca.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xF8CA | 18280 bytes |
SHA-256: 5710c4b2d7011c49cee2156becb7470daae6ea37065522d9478399f419fc4707 |
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font_02_sfnt_off000127b8.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x127B8 | 11000 bytes |
SHA-256: c5c61b237adc3b33079f259a9c29a3ec775d1084f703df6fd01918a9284e14fe |
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