PDF malware analysis — malicious · 3d8dc46d2345f05d

MALICIOUS

PDF

83.0 KB Created: 2021-09-12 20:30:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-12

MD5: b009fe55e1d25c268854d373e1cffec6 SHA-1: 5a65681091f0b47b4e498d9e0f8098a8893aa265 SHA-256: 3d8dc46d2345f05dbb4e28062db8715640e82ef883ceb370f73c32d8c4bdf678

134 Risk Score

Malware Insights

MITRE ATT&CK

T1059.007 JavaScript T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely redirects to one of the numerous unknown-reputation URLs found in the document, which are designed to host further malicious content or phishing pages.

Machine Learning

Nyx PDF Classifier malicious score 0.9955

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM

Small 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.
Embedded JS stream low PDF_JS

PDF references a /JS stream. Generic JavaScript is common in benign forms; specific dangerous APIs are scored by separate rules.
External URI info PDF_URI

PDF contains an external URL action
Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL

The 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.
Embedded URL info EMBEDDED_URL

One 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 http://goodlife88.com/uploads/files/47017535310.pdf In PDF document text
- http://aapltd.net/userfiles/file/66496483438.pdfIn PDF document text
- http://bumsnab.ru/uploads/files/711354843.pdfIn PDF document text
- https://coastalholidayproperty.com/ckfinder/userfiles/files/ruzodajasenid.pdfIn PDF document text
- http://ylgems.com/file_media/file_image/file/tajurexuvijurureterupobu.pdfIn PDF document text
- https://goacetours.com/ckfinder/userfiles/files/moridimidafunuzopogimib.pdfIn PDF document text
- http://pokemom2.com/uploads/files/36147965204.pdfIn PDF document text
- http://vincitydata.com/uploads/ckfinder/files/72998128449.pdfIn PDF document text
- https://foodphotoshop.com/userfiles/files/wodovev.pdfIn PDF document text
- https://jiu-hang.com/upfiles/editor/files/pixib.pdfIn PDF document text
- https://patriot.ch/wp-content/plugins/super-forms/uploads/php/files/0nch6ash45em70ake2toivpako/23003505999.pdfIn PDF document text
- https://firesystem.ro/imagini_ws/logolexosavixebe.pdfIn PDF document text
- http://gestaocipa.com/public_html/Imagens/file/42312901888.pdfIn PDF document text
- http://www.fsnn.se/wp-content/plugins/formcraft/file-upload/server/content/files/16132d3d1928e3---xanixuwunezadikonake.pdfIn PDF document text
- http://burmeseburmilla-allevamento.com/userfiles/files/larogagexomejafakuw.pdfIn PDF document text
- http://ekvatorbl.com/userfiles/file/filesekawopererifu.pdfIn PDF document text
- http://cermak-expo.cz/data/files/file/jimulejo.pdfIn PDF document text
- https://degardo.hollandpazsit.hu/ckfinder/userfiles/files/20256229388.pdfIn PDF document text
- http://www.la-rocca.pl/app/webroot/files/files/mivovinimof.pdfIn PDF document text
- http://eminenceinc.com/userfiles/file/47080665292.pdfIn PDF document text
- http://hokkaido-love87.com/app/webroot/js/ckfinder/userfiles/files/papumabukozitavoma.pdfIn PDF document text
- http://proficlim.ru/public/userfiles/file/fitobemipuvutopuduzup.pdfIn PDF document text
- http://abpjse.news-read.com/upload/files/golunotumevejetigun.pdfIn PDF document text
- http://mitroc.com/userfiles/file/27048198520.pdfIn PDF document text
- https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/FevRqgeaUVY/uplcv?utm_term=how+to+insert+video+indesignPDF link annotation
- 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_off0000e224.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE224	17448 bytes
SHA-256: `8e3fac68f6b0b3e41fcfb1b4efdc5831884cc38abf5ed9e17875706b372ba2a1`
`font_01_sfnt_off00010f71.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10F71	10360 bytes
SHA-256: `969f2ec46ec21fb938c3ac4adca85a72d102f6268e6112de0d55b59f40ac1854`
`font_02_sfnt_off000126c5.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x126C5	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`

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