PDF malware analysis — malicious · 8ce47e6adbadddc4

MALICIOUS

PDF

75.2 KB Created: 2021-09-12 21:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-14

MD5: 7e14533c02a17cd057e4c23bde2e9c4b SHA-1: c002d29902c9cf1ba1a06d24cb4c08b77d73ed35 SHA-256: 8ce47e6adbadddc4f152b3e298f778ec3eac36cb548b7d3b1a050d8b23852f49

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. It contains embedded JavaScript and numerous external URIs, suggesting it is designed to redirect users to potentially harmful websites. The PDF_SEO_DISPOSABLE_LINK_FARM heuristic further supports the idea that the document is part of a link farm, likely for phishing or malware distribution.

Machine Learning

Nyx PDF Classifier malicious score 0.9947

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 https://oniceh.ru/uplcv?utm_term=blade+runner+mp4 PDF link annotation
- https://www.higher-energy-trampolineclub.com/wp-content/plugins/formcraft/file-upload/server/content/files/161370e94cd9e6---49617909217.pdfIn PDF document text
- http://railwaysrailroads.com/upload_files/files/nelotefapabadam.pdfIn PDF document text
- http://anabakorea.jp/userfiles/file/97300222323.pdfIn PDF document text
- http://pro-customer.de/userfiles/file/jelabifetibenewaf.pdfIn PDF document text
- http://rosritual.su/app/webroot/js/ckfinder/userfiles/files/13569628578.pdfIn PDF document text
- http://xn--9i1b14l32gg2dsybq3b.com/upload/fckeditor/file/pejomujaroxaleravow.pdfIn PDF document text
- http://travelbilet.ru/sites/default/files/file/mefawugitop.pdfIn PDF document text
- http://www.greddy.com/admin/common/ckfinder/userfiles/File/85187088039.pdfIn PDF document text
- http://gevenschoenen.nl/ckfinder/userfiles/files/fotofarip.pdfIn PDF document text
- http://ylgems.com/file_media/file_image/file/15669117144.pdfIn PDF document text
- http://gryfarmerskie.pl/pliki_wyswig/files/68491462212.pdfIn PDF document text
- https://terrebleue.org/userfiles/file/kubariretiv.pdfIn PDF document text
- https://cyc-catering.pe/disac/userfiles/file/86353222605.pdfIn PDF document text
- http://lmnn.ru/userfiles/file/1703446493.pdfIn PDF document text
- http://krajinar.cz/soubory/files/36974211786.pdfIn PDF document text
- http://anoh.net/pds/userfiles/files/julubokebedegor.pdfIn PDF document text
- http://dealershop.es/userfiles/file/getafaribonizudixig.pdfIn PDF document text
- http://agriturismoilnoceto.com/userfiles/files/4969057711.pdfIn PDF document text
- http://xn--80aafbjcazdrhzgiddbbcsg4l.xn--p1ai/pict/file/litosawe.pdfIn PDF document text
- https://www.dooleysnaturalgas.com/ckfinder/userfiles/files/zixazijoxemuzofupugiveme.pdfIn PDF document text
- http://telektrans.hu/editor_up/jilobebiwomurupe.pdfIn PDF document text
- http://tradotel-riviera.com/file/26332883685.pdfIn PDF document text
- https://berettyotv.hu/userfiles/files/ponomivigiranifu.pdfIn PDF document text
- https://pellevah.com/upload/files/83750220106.pdfIn PDF document text
- https://propbrains.com/wp-content/plugins/super-forms/uploads/php/files/72e3cac9645e1bbe324ae09b89b4e8a3/36473180084.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_off0000bed0.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBED0	10304 bytes
SHA-256: `c4e5aed43a454a7931b10c2ec888b0340bb7dbb955050ecdd9ec7c2c846e3181`
`font_01_sfnt_off0000d5f9.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD5F9	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off0000ee0b.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEE0B	19032 bytes
SHA-256: `ed6b66aea056af00f401bb504ead1e4dd0424e140d7ca823205168e9eee4460c`

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