PDF malware analysis — malicious · f421ea64dacd8612

MALICIOUS

PDF

74.8 KB Created: 2021-09-23 01:51:58 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-23

MD5: b85be7a7e335d58674c8c5481d05dd0e SHA-1: 7ecfb797a05cf85775665e4f2939c994ec2d0aba SHA-256: f421ea64dacd86128fd7059374ef4922a54c90dd52e51df15d0717142692c8fe

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment

The PDF contains numerous embedded URLs pointing to disposable domains, a common tactic for phishing or malware distribution. The ClamAV detection and ML classifier strongly indicate malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded URIs suggest it's designed to redirect users to malicious sites, likely as part of a phishing campaign.

Machine Learning

Nyx PDF Classifier malicious score 0.6590

Heuristics 4

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.
External URI info PDF_URI

PDF contains an external URL action
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://ketchas.ru/uplcv?utm_term=tvzion+on+firestick PDF link annotation
- https://adamant54.ru/userfiles/files/92989923675.pdfIn PDF document text
- http://studiotecnicolamanna.com/userfiles/files/sobijavameguredonokuzegi.pdfIn PDF document text
- http://sgrappresentanze.eu/userfiles/files/4055554474.pdfIn PDF document text
- http://ituor.ir/basefile/chartermeinfo/files/zefavixomojovevuwurizedi.pdfIn PDF document text
- http://ms-beauty.com/ckfinder/userfiles/files/japodudeda.pdfIn PDF document text
- http://landonintergroup.com/ckfinder/userfiles/files/91483103926.pdfIn PDF document text
- http://www.deadclan.nl/wp-content/plugins/formcraft/file-upload/server/content/files/1614911cbbd279---wefesomopop.pdfIn PDF document text
- http://liderzy.natura2000.pl/imgturysta/files/4179885793.pdfIn PDF document text
- http://paillasse.hu/userfiles/file/45711226691.pdfIn PDF document text
- http://fsnmmaterials.com/UPFILE/userfiles/files/63426751474.pdfIn PDF document text
- https://mimpishiosatu.com/contents/files/jujakajafafu.pdfIn PDF document text
- https://zerling.eu/nico/images/files/zarirefefofevowogip.pdfIn PDF document text
- https://yocarbroker.com/upload/ckfinder/files/fozejivonapudawexulebeb.pdfIn PDF document text
- http://swancentive.com/cote_dor_import/admin/ckfinder/userfiles/files/kegudenatigagidexujur.pdfIn PDF document text
- http://polyacer-ecp.com/userfiles/files/20210909_083851.pdfIn PDF document text
- http://xn--365-pn7mwb654m2qn.com/ckupload/files/denopikenadowozeji.pdfIn PDF document text
- https://volgogradexpo.ru/ckfinder/userfiles/files/28006884872.pdfIn PDF document text
- https://dovolena-jiznicechy.cz/uploads/kapis.pdfIn PDF document text
- https://condicionamentofisico.com/arquivos/file/51092239337.pdfIn PDF document text
- https://theshamrockpublecco.it/file/mabivij.pdfIn PDF document text
- https://braviengenharia.com.br/wp-content/plugins/super-forms/uploads/php/files/626os6j939ecko8842acvf6n8d/68797164340.pdfIn PDF document text
- http://telekommarketing.com/firme_data/files/lovadomafufolibawuguwa.pdfIn PDF document text
- https://albizy.com/ckfinder/userfiles/files/82498656857.pdfIn PDF document text
- http://pwr-tech.ru/userfiles/file/3285702518.pdfIn PDF document text
- http://adance0112.com/upfile/editor/file/wojazunonoxo.pdfIn 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_off0000bced.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xBCED	10300 bytes
SHA-256: `f42a2c4c1947e1ac40691d61ffcb109f1310adbbb0aaebf2d6ea3eb88c89b3b5`
`font_01_sfnt_off0000d45c.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xD45C	16244 bytes
SHA-256: `fddcbe21bdf9fb2753729b4ab5b26d7a3fbb01e3fe51d41ab0725360e25c189d`
`font_02_sfnt_off0000ea46.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xEA46	21868 bytes
SHA-256: `eb9d22cf456ff044a3059d4c146f654af2cf8b98a06e6cc576c1a6762f9fc58d`

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