PDF malware analysis — malicious · 204771575e41c454

MALICIOUS

PDF

80.1 KB Created: 2021-10-10 00:56:32 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-11-25

MD5: a0b8387586febff53a57093799e7ddb5 SHA-1: c4fbe6ad7cbc7e8cd86d0198027e09fc245c3000 SHA-256: 204771575e41c454ac3c556b515535d2764e9b065afdbd178c9160dc9a618c53

134 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains embedded JavaScript and multiple external URIs, indicating an attempt to redirect the user to malicious websites. The ML classifier and ClamAV detection strongly suggest malicious intent, likely for phishing or malware delivery. The presence of embedded JavaScript (T1059.007) suggests it may be used to facilitate the redirection or exploit vulnerabilities.

Machine Learning

Nyx PDF Classifier malicious score 0.9953

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://philabc.ru/uplcv?utm_term=convert+pdf+to+one+image PDF link annotation
- https://4u70t3k0-4tl.com/contents/files/79661215742.pdfIn PDF document text
- http://immobilieninvestors.com/userfiles/file/larogan.pdfIn PDF document text
- https://www.hs-hofgastein.salzburg.at/ckfinder/userfiles/files/22533839420.pdfIn PDF document text
- https://mccartha-cobb.com/userfiles/files/tajujubonarel.pdfIn PDF document text
- https://citronixdeflection.com/nbloom/fckuploads/file/bojewapur.pdfIn PDF document text
- http://litho-and-co.fr/ckeditor/upload/files/68257914315.pdfIn PDF document text
- http://artbaget.net/admin/ckfinder/userfiles/files/9350586448.pdfIn PDF document text
- http://nattukoottam.com/userfiles/file/60517106689.pdfIn PDF document text
- https://vdbergelectro.nl/wp-content/plugins/super-forms/uploads/php/files/5d807a19b663f136f7f40fe1ce7f2237/69592107777.pdfIn PDF document text
- https://www.anoregmt.org.br/ckeditor/ckfinder/userfiles/files/87286538417.pdfIn PDF document text
- http://rosniyom.com/userfiles/files/17193565551.pdfIn PDF document text
- http://rc-modeller.se/images/file///nexegil.pdfIn PDF document text
- http://fobas.cz/userfiles/file/tanetoxip.pdfIn PDF document text
- https://kinohorror.com/upload/file/49714086690.pdfIn PDF document text
- https://zivotzaokny.eu/res/file/93801294491.pdfIn PDF document text
- https://geneolock.com/ckfinder/userfiles/files/37145425043.pdfIn PDF document text
- https://bibliotheque-des-arts.com/ckfinder/userfiles/files/76999757182.pdfIn PDF document text
- https://www.hkfew.org.hk/ckfinder/userfiles/files/33770432843.pdfIn PDF document text
- https://luxm.pl/userfiles/file/lajuge.pdfIn PDF document text
- http://gamjagolla.com/uploads/files/winonetimanep.pdfIn PDF document text
- https://kidneystonetreatment.in/userfiles/files/80312803151.pdfIn PDF document text
- https://cpc-serbia.org/js/files/lusevegupirimatujizuro.pdfIn PDF document text
- http://baobianhkhang.com/upload/files/97305187953.pdfIn PDF document text
- http://baovethanglongmb.com/upload/files/87316606945.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_off0000d225.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD225	18548 bytes
SHA-256: `045da0f6dc3b04d1f0fe862ae85bc3ca3fc551473fe35d66de8c95353e3ffb59`
`font_01_sfnt_off00010240.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x10240	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_02_sfnt_off00011a57.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0x11A57	10724 bytes
SHA-256: `9195567b86edbf59fab9ead001745a9a9aa4898303d29b9c0745ed4e7b3ed1ed`

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