PDF malware analysis — malicious · ef0914a2ffa9c98c

MALICIOUS

PDF

59.8 KB Created: 2021-09-25 21:58:19 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-04

MD5: faa783ed637440c253ebe9a2e9833cc7 SHA-1: d9f14cb16a52258303d7937a9830320409b6af2b SHA-256: ef0914a2ffa9c98c1c4d82ae5e2614216cb69a1c578aa779dcef44ec4620ea1f

124 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

Nyx PDF Classifier malicious score 0.5519

Heuristics 4

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.
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://wastran.ru/uplcv?utm_term=ghajini+full+hd+movie+download+1080p PDF link annotation
- https://beautifulhairstore.com/upload/files/dodinamatosikelevevebi.pdfIn PDF document text
- http://theemasternetworker.com/ckfinder/userfiles/files/rokejidifurixanudo.pdfIn PDF document text
- http://xn----otbbfbbknchz.xn--p1ai/sadm_files/puzewojakaposufokoxigur.pdfIn PDF document text
- http://cageart.ca/wp-content/plugins/formcraft/file-upload/server/content/files/1613bd64a3b903---jetovuz.pdfIn PDF document text
- https://glycocalyx.nl/userfiles/image/file/28842807436.pdfIn PDF document text
- http://www.fuchingrading.com/upload/file/bumaluwujuganorakuteval.pdfIn PDF document text
- http://finadev-groupe.com/userfiles/file/lodokadalujon.pdfIn PDF document text
- http://munnartourism.com/uploads/file/potaloburomipideji.pdfIn PDF document text
- http://mos-craciun-inchiriere.ro/fckfiles/file/kedizofijuvaditokewu.pdfIn PDF document text
- https://moderator.lt/components/com_mijoshop/opencart/image/data/files/sovawadutubunaseji.pdfIn PDF document text
- https://rowanmkt.com/Uploads/ckfinder/userfiles/files/5399636492.pdfIn PDF document text
- https://www.potravinyav21.cz/ckfinder/userfiles/files/befibimi.pdfIn PDF document text
- https://kawinlari.com/contents/files/12615903947.pdfIn PDF document text
- https://cbdc.co/uploads/ckfinder/userfiles/files/65695710871.pdfIn PDF document text
- http://interreg-ipa-husrb.com/downloads/63377140169.pdfIn PDF document text
- https://biroestarsa.hu/uploads/file/19696799626.pdfIn PDF document text
- http://22vek-omsk.ru/fck_editor_files/files/55999306150.pdfIn PDF document text
- http://dsacare.com/admin/uploads/file/zuliziwatoxejoba.pdfIn PDF document text
- https://hogozaty.com/ckfinder/userfiles/files/wozemamekazurajofusim.pdfIn PDF document text
- http://gd-weimi.com/upfolder/e/files/20210905145344.pdfIn PDF document text
- http://home-plast.ru/foto/files/27692304930.pdfIn PDF document text
- https://photopoligrafic.ru/ckfinder/userfiles/files/nawelamusodajopegegitib.pdfIn PDF document text
- http://willettelaw.com/customer/3/d/9/3d947ad6ce2568d98b832ccf5548371bFile/rewopasizedolorapa.pdfIn PDF document text
- http://geologocarmignani.com/userfiles/files/20527615293.pdfIn PDF document text
- http://krukaiart.com/userfiles/files/34945408799.pdfIn PDF document text
- https://vietnaminsight.biz/ckfinder/userfiles/files/fawivop.pdfIn PDF document text
- http://dejavu.sourceforge.netIn PDF document text
- http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`font_00_sfnt_off0000b4fc.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xB4FC	16792 bytes
SHA-256: `9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1`
`font_01_sfnt_off0000cd0e.bin`	pdf-font-stream	PDF embedded font (sfnt) at offset 0xCD0E	15276 bytes
SHA-256: `19740d70f18250e0aedce8eca8a8c6d61ee1625cf64c8143ea0217eb3bf4206e`

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