PDF malware analysis — malicious · ad54bb9ccbcae652

MALICIOUS

PDF

89.8 KB Created: 2021-09-16 05:17:05 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27

MD5: fcdef49e456f21eea60d9b2b761dc4a0 SHA-1: cf738e5882fc5dac22981e35c0c1f6e3425cb0da SHA-256: ad54bb9ccbcae652a04aa8bf2c43f9c95acd123292b4c2d2ce841e0380585ede

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript, a common technique for executing malicious code within documents. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded JavaScript likely redirects the user to a malicious URL, such as the one found pointing to 'inwebjor.ru', for further exploitation or phishing.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

Heuristics 6

ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
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://inwebjor.ru/uplcv?utm_term=videoleap+video+editor+%26+maker+apk PDF link annotation
- https://www.nissan-utilitaires-melun.fr/ckfinder/userfiles/files/7977742521.pdfIn PDF document text
- http://smenergy.kr/uploaded/file/1554656612613325f3d2349.pdfIn PDF document text
- http://libertyquad72.fr/userfiles/file/85263110989.pdfIn PDF document text
- https://austarpharma.com/upload/files/82517575230.pdfIn PDF document text
- https://ausztriasi.spawellness.hu/upload/hirlevel/files/11701072250.pdfIn PDF document text
- http://ptk-astana.kz/wp-content/plugins/super-forms/uploads/php/files/21c3f3870b836b42a7a4ca165b435113/bubukivik.pdfIn PDF document text
- https://postelezmasivu-ostrava.cz/ckfinder/userfiles/files/48536109325.pdfIn PDF document text
- http://kpdb.org/userfiles/files/gedejefazekerok.pdfIn PDF document text
- http://hillsclinic.com/fckeditor/editor/filemanager/connectors/php/userfiles/file/mamiduniwikexusowin.pdfIn PDF document text
- https://shidoremicrosys.com/media/57138811595.pdfIn PDF document text
- http://radio-salsa.com/php/rs/filesupload/file/boredovijati.pdfIn PDF document text
- http://cetis156.neutronds.com/assets/js/ckfinder/userfiles/files/rasezoluzurogupelubog.pdfIn PDF document text
- http://kartelabasligi.com/images_upload/files/78832982302.pdfIn PDF document text
- https://www.enviedecrire.com/wp-content/plugins/formcraft/file-upload/server/content/files/161363530b1762---vewojuxozezatopegubebisux.pdfIn PDF document text
- http://sake2metustin.com/uploads/files/duromegununun.pdfIn PDF document text
- http://commissioncollectionlaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/faponijoxux.pdfIn PDF document text
- http://nincity.de/inline/file/tofedopana.pdfIn PDF document text
- http://highspiritsmusic.com/ckfinder/userfiles/files/lurepaxesaje.pdfIn PDF document text
- https://classykitchen.pl/web/uploads/files/wasuxufotuwitutalozakepu.pdfIn PDF document text
- http://pogologistics.com/ckfinder/userfiles/files/8677150916.pdfIn PDF document text
- http://fairfresh.net/assets/admin/ckeditorimage/files/53089512506.pdfIn PDF document text
- http://studioguidobarbieri.it/userfiles/files/36543117322.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_off0000e040.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xE040	10148 bytes
SHA-256: `e2d1d827a86c07a3e14c4472f0c1a67ce70fe035f7edfab200dd2fd7dc1eee8b`
`font_01_sfnt_off0000f700.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xF700	16352 bytes
SHA-256: `9c09c88ae8c16bff84111354316359d021997fb4aad4f8972c10b81994a3a1b4`
`font_02_sfnt_off00010d68.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10D68	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_03_sfnt_off0001257a.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x1257A	19696 bytes
SHA-256: `187d401a295b6aaafc7e948ca4a38ee7c2c060b946d0ffe69774e022f10235d8`

Open this report in the interactive analyzer, or submit your own file for analysis.