MALICIOUS
174
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1204.002 Malicious Link
The PDF contains embedded JavaScript and a large number of external URIs, many of which point to disposable domains. The heuristic 'SE_PASSWORD_ARCHIVE_LURE' indicates the document likely instructs the user to decrypt a password-protected archive, a common tactic for evading gateway security. The ML classifier and ClamAV detection strongly suggest malicious intent, likely to deliver a second-stage payload.
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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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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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://cructi.ru/uplcv?utm_term=turn+phone+into+wifi+repeater PDF link annotation
- http://changwontour.kr/FileData/ckfinder/files/20210907_0F6E510131A40DE2.pdfIn PDF document text
- http://dabaizhongxue.com/upload_fck/file/2021-9-8/20210908175302676653.pdfIn PDF document text
- https://syteq-pro.com/userfiles/file/47299962611.pdfIn PDF document text
- http://studiotecnicodama.it/userfiles/files/48948064010.pdfIn PDF document text
- https://amatnieks.com/pictures/image/25101327343.pdfIn PDF document text
- https://jerseyshorepirates.com/userfiles/files/40405293078.pdfIn PDF document text
- http://serextion2006.com/js/upload/files/65904172974.pdfIn PDF document text
- http://www.ortodonciaelisafarache.com/ckfinder/userfiles/files/52317613769.pdfIn PDF document text
- http://exteractif.fr/pictures/2/kokuf.pdfIn PDF document text
- https://ww150002.linebot.net/upfile/files/20210904204846.pdfIn PDF document text
- http://slowjamsundays.com/wp-content/plugins/formcraft/file-upload/server/content/files/1612feb788b266---642151018.pdfIn PDF document text
- https://tskrea.com/userfiles/file/54726537508.pdfIn PDF document text
- http://aburobocon2019.mnb.mn/uploads/files/71873957881.pdfIn PDF document text
- http://fairfresh.net/assets/admin/ckeditorimage/files/neselaxujunimudip.pdfIn PDF document text
- https://unitedfightalliance.com/ckfinder/userfiles/files/7663735873.pdfIn PDF document text
- http://orthodoxnews.us/file/tufagexamupul.pdfIn PDF document text
- http://sirindhorn.net/upload/File/96631665700.pdfIn PDF document text
- https://jucariicopilasi.ro/app/webroot/files/userfiles/files/23968820023.pdfIn PDF document text
- https://sharzh-ufa.ru/wp-content/plugins/super-forms/uploads/php/files/285a282c7d2e86b56113d2afc7a379bd/jiledinikobasedif.pdfIn PDF document text
- https://turismopontevedra.com/ckfinder/userfiles/files/72146583206.pdfIn PDF document text
- https://sensormaticltd.com/app/templates/js/ckfinder/userfiles/files/27952850799.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 4
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000e212.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE212 | 19376 bytes |
SHA-256: cbd58dced92ad37cc248ed598c1c1b3e0cdd1b44a9617ff5a2cf1919a2c63e7a |
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font_01_sfnt_off0001126f.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x1126F | 18172 bytes |
SHA-256: 262b419de96b0cc407d9d0985712d1c49250dfdf04ad45e38b515124ac0c70ff |
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font_02_sfnt_off00012e8a.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12E8A | 10388 bytes |
SHA-256: 238b48676ea4b7219f0ad477c7f9dcca0173666fb4d280b168f3ebcd2ece7f9a |
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font_03_sfnt_off00014607.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x14607 | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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