MALICIOUS
196
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
T1203 Exploitation for Client Execution
The PDF document was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. Heuristics indicate it functions as a link farm and a lure for browser extension installation. While no scripts were directly extracted, the presence of external URIs and the nature of the lure suggest it likely leads to a second-stage download or phishing page.
Machine Learning
- Nyx PDF Classifier malicious score 0.9974
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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Browser extension / update installation lure high SE_BROWSER_INSTALL_LUREDocument tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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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://catamma.ru/uplcv?utm_term=screenshotting+on+android
- http://tomgiongvip.com/uploads/files/file/75070526585.pdf
- http://2478.ru/admin/ckfinder/userfiles/files/zesavajetajixug.pdf
- https://seltec.io/images/uploads/files/rixobepaki.pdf
- https://mediaget.ru/userfiles/files/rekokonemiros.pdf
- http://inoxbienhoa.com/upload/files/14089770955.pdf
- http://silarperu.com/UserFiles/file/zanigawukek.pdf
- https://bursac.net/userfiles/file/kibidejuvolezesap.pdf
- http://richmore.kr/uploadfile/fckeditor/file/dedawoxorini.pdf
- http://studiosiriosrl.it/userfiles/files/jaxuvawokibaxofujudizedi.pdf
- https://okazdedziecko.pl/_files/Media/file/tedagiwamudum.pdf
- http://poslovniimenik.net/firme_data/files/25852576790.pdf
- https://jaurrieta.net/USERFILES_JAURRIETA/files/58840954426.pdf
- https://www.studioline.ie/ckfinder/userfiles/files/filusat.pdf
- https://quatcongnghieput.com/uploads/files/buxebovakakinalujerojuvir.pdf
- http://www.mueblesgamez.com/ckfinder/userfiles/files/wafixerolon.pdf
- http://arrhythmiaclinic.com/userfiles/file/20210903133824.pdf
- http://www.nuricomuvakfi.org/wp-content/plugins/super-forms/uploads/php/files/u4p2lngdr5gqqfd89rfbmr97t4/41122309202.pdf
- http://www.whirlpool-beachcomber.at/wp-content/plugins/formcraft/file-upload/server/content/files/161322edb85905---69606416529.pdf
- http://library.nesdb.go.th/ic/admin/ckfinder/userfiles/files/20757726506.pdf
- http://stellamaris.cz/userfiles/peladenabolomidobowutetu.pdf
- http://hocomesun.com/upload/mepowomorekovanoxobevetu.pdf
- https://hacunamatata.ru/wp-content/plugins/super-forms/uploads/php/files/6f1e3093f082aac8be8cb38dc975292a/95654544409.pdf
- https://motionslam.com/wp-content/plugins/super-forms/uploads/php/files/036330a880bebd69f3a0e876a7b26459/13072089368.pdf
- https://www.reparaciondebomba.com.ar/wp-content/plugins/super-forms/uploads/php/files/8c63bgupkobiqpv3fimi4cbkt6/84083266643.pdf
- http://yasaitogo.com/uploads/files/79376816408.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off0000db95.bin5ef49972f314baeb0eb839dadf3e671a15c148694d27625df80abad0d22a5c8e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0xDB95 | 18820 bytes |
font_01_sfnt_off00010c2b.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10C2B | 16792 bytes |
font_02_sfnt_off00012442.bin026b84bc6e38b9f695acf7abc0cc4f3ac3d4b11872a65fa83ba9a17206580da1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x12442 | 10676 bytes |
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