Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb2ee48617b6926f…

MALICIOUS

PDF

76.2 KB Created: 2021-09-13 06:11:25 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 19ab3dec6ad4c295fef40db0e60ffaaa SHA-1: f9b74bb233621ee3de14152d5f9019d7141efca1 SHA-256: bb2ee48617b6926f682e830f9729b361ccac1620986bf09b6b00b662b88ae1ee
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF file contains numerous external links, many of which point to disposable domains and are structured as a link farm. The presence of a URL with a 'utm_term' parameter suggests a phishing or social engineering attempt to trick users into downloading software. ClamAV detection and ML classification further support its malicious nature.

Machine Learning

  • Nyx PDF Classifier malicious score 0.5631

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://synerhu.ru/uplcv?utm_term=shadow+fight+2+special+edition+download+apk PDF link annotation
    • http://makaroma.fr/upload/file/35327535546.pdfIn PDF document text
    • http://otpetye.com/images/shared/file/vemitofanevefirusibazat.pdfIn PDF document text
    • http://ipea.kr/userData/board/file/23775208908.pdfIn PDF document text
    • http://danguykhoidoanhnghiephp.vn/Upload/files/melidekaxejanukarit.pdfIn PDF document text
    • http://architettoseneca.com/userfiles/files/43443201365.pdfIn PDF document text
    • https://globalybm.com/ckfinder/userfiles/files/1631156025.pdfIn PDF document text
    • http://edituj.cz/res/file/48306277892.pdfIn PDF document text
    • https://hotel-la-licorne.fr/userfiles/file/mifanozudakurojiradabo.pdfIn PDF document text
    • http://www.ncstarim.com.tr/wp-content/plugins/super-forms/uploads/php/files/tmqt3bbvslr4lijdpelt23jcv5/sedoxibimuzi.pdfIn PDF document text
    • http://www.louisefarmersmith.com/admin/ckeditor/ckfinder/userfiles/files/18029988115.pdfIn PDF document text
    • https://qualitycountscleaning.com/wp-content/plugins/super-forms/uploads/php/files/036eddc4c5bb62c8d738d5149ccb0d2f/17061020706.pdfIn PDF document text
    • http://aptekadc.pl/userfiles/userfile/pekekiwujudekesutemekoje.pdfIn PDF document text
    • http://th-hl.com///upload/files/nozuzojefosa.pdfIn PDF document text
    • https://eniedu.com/data/file/20210912165851.pdfIn PDF document text
    • https://zlato-stribro-investice.com/upload/files/kolixo.pdfIn PDF document text
    • http://sarigol.kr/userData/ebizro_board/file/gugutatasosatekamiki.pdfIn PDF document text
    • http://ndt-ultratech.com/files/2166462764.pdfIn PDF document text
    • http://ventexevent.se/uploads/file/81757317082.pdfIn PDF document text
    • http://thietbikhachsanvinhhung1.com/upload/files/forapowasodisig.pdfIn PDF document text
    • http://garnizone.com/userfiles/file/63614120427.pdfIn PDF document text
    • http://yongqingtech.com/d/files/36248038080.pdfIn PDF document text
    • http://uforoi.com/app/webroot/uploads/files/xomalidiwug.pdfIn PDF document text
    • https://denizlihorozu.com/resimler/files/12633672802.pdfIn PDF document text
    • https://pustelnik-budownictwo.pl/ckfinder/userfiles/files/lomulem.pdfIn PDF document text
    • https://mar3ol.com/Files/files/99781039787.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.

FilenameKindSourceSize
font_00_sfnt_off0000dbed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBED 16792 bytes
SHA-256: 9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1
font_01_sfnt_off0000f404.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF404 11172 bytes
SHA-256: 509d35410b2914805be1713f1d3656e0e3602e60433b5d1521243a2c7cdb171d