MALICIOUS
154
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
The PDF contains embedded JavaScript and multiple external URIs, including one identified as a link farm on disposable hosting. The heuristic 'SE_CALLBACK_LURE' suggests a callback phishing or tech-support scam pattern. The ML classifier and ClamAV detection strongly indicate malicious intent, likely to redirect users to malicious sites or initiate further compromise.
Machine Learning
- Nyx PDF Classifier malicious score 0.9942
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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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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Callback phishing phone lure medium SE_CALLBACK_LUREDocument asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) documents that carry no urgency or charge/dispute escalation.
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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://philabc.ru/uplcv?utm_term=how+to+make+chrome+my+default+browser+on+my+phone PDF link annotation
- http://zhizhencn.com/filespath/files/20210920051855.pdfIn PDF document text
- http://www.kigimex.com.vn/ckfinder/userfiles/files/rizepakuzorafolixuj.pdfIn PDF document text
- https://propage.q-cloud.net/upload/ckeditor/pages/files/34824143791.pdfIn PDF document text
- http://gymostrov.eu/gymostrov/userfiles/file/48331252802.pdfIn PDF document text
- http://tractortools.cz/ckfinder/userfiles/files/nuxafexuredizopix.pdfIn PDF document text
- http://itnetworkconsultingsf.com/helpdesk/app/webroot/img/userfiles/files/31623940283.pdfIn PDF document text
- http://truhlarstvisollner.cz/data/file/76079006246.pdfIn PDF document text
- http://asijskepotraviny.cz/files/file/79258214038.pdfIn PDF document text
- http://windcampus.com/wp-content/plugins/formcraft/file-upload/server/content/files/161319d3a91925---jegakevaxasijuwufemagol.pdfIn PDF document text
- http://ombs.ru/uploads/files/94570736051.pdfIn PDF document text
- http://speed-r.com/js/upload/files/72604385167.pdfIn PDF document text
- https://ncfouting.com/wp-content/plugins/formcraft/file-upload/server/content/files/1614144058c2c7---rigumuzobilamit.pdfIn PDF document text
- https://weekendtripskolkata.com/userfiles/file/mimovabudobevanagakek.pdfIn PDF document text
- http://tipsclubcr.com/campannas/file/66976890127.pdfIn PDF document text
- http://laiksmodalux.lt/app/webroot/uploads/userfiles/files/pilafulebisovosotig.pdfIn PDF document text
- http://spzpoz-zdunskawola.pl/upload/file/subewepoluluvonelete.pdfIn PDF document text
- http://ukwoodrecycling.com/userfiles/files/4346364043.pdfIn PDF document text
- http://eraldocomo.it/userfiles/files/53746015099.pdfIn PDF document text
- https://newchat.xyz/js/ckfinder/userfiles/files/30453132103.pdfIn PDF document text
- https://ekinyalitim.com/depo/sayfaresim/file/votosonixov.pdfIn PDF document text
- http://izeninfo.net/admin/upload/files/liledimoxijiw.pdfIn PDF document text
- http://hebakotb.net/userfiles/file/24680662611.pdfIn PDF document text
- http://headrepublic.pl/images/files/7657208803.pdfIn PDF document text
- http://centroolosprato.it/userfiles/files/jojosopalimiwe.pdfIn PDF document text
- http://cuacuonanbinh.com/userfiles/file/miparuko.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_off0000e68c.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xE68C | 16792 bytes |
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
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font_01_sfnt_off0000fea3.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xFEA3 | 11316 bytes |
SHA-256: e4c8235703c26be5f6222d8a168bd2a08622a08243e1f5e39d6515762fb8fc13 |
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font_02_sfnt_off000118e6.bin |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x118E6 | 19632 bytes |
SHA-256: 4ee9d61f340a3a94ef700d6b2ac72f10e2b561c3725c8e9e69769ccd5870d3a8 |
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