Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f073abdff379fe6…

MALICIOUS

PDF

65.1 KB Created: 2021-09-16 08:48:18 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-24
MD5: 1250928544c25731a3dcba2cace2ca07 SHA-1: f8c6a0e03a2ff054942f1d23bebba110a9521dc4 SHA-256: 4f073abdff379fe6770638fcde91af547fc27af9d72472b0e537eeaf44843509
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The file is identified as malicious by ClamAV with a specific signature indicating it's a phishing trojan. The PDF contains numerous embedded URLs, with one heuristic specifically flagging it as a link farm on disposable hosting, suggesting an attempt to distribute malicious content or phish users. Although no scripts were extracted, the presence of many unknown URLs indicates a high likelihood of redirection to malicious sites.

Machine Learning

  • Nyx PDF Classifier suspicious score 0.4667

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 http://ophtalmic-overnight.fr/wp-content/plugins/formcraft/file-upload/server/content/files/16142d1813249a---wuwokekolaver.pdf In PDF document text
    • http://rideabikenews.com/user_img/files/wamipolokuxadosalilowe.pdfIn PDF document text
    • https://autosofortkauf.ch/wp-content/plugins/super-forms/uploads/php/files/s6qs6fggtmkp3j9hccms409abk/42164327140.pdfIn PDF document text
    • http://mosjob.ru/images/file/zoxilonerotiwoze.pdfIn PDF document text
    • https://hoavily.com/uploads/files/94576496192.pdfIn PDF document text
    • https://bak.vn/upload/files/pagabel.pdfIn PDF document text
    • http://tehnicgaz.eu/files/file/40444264607.pdfIn PDF document text
    • http://dd-eng.com/files/files/84492874194.pdfIn PDF document text
    • https://lidiyageorgieva.com/ckfinder/userfiles/files/gijujikokonage.pdfIn PDF document text
    • http://osteriadelcampanile.com/userfiles/files/fuparara.pdfIn PDF document text
    • http://studiogiamberardino.it/userfiles/files/19635385590.pdfIn PDF document text
    • https://worldpigment.com/image/upload/File/wimova.pdfIn PDF document text
    • http://architettorobertafasola.eu/userfiles/files/fagaku.pdfIn PDF document text
    • https://fallsplat.se/bildbank/file/banajabajowasotefez.pdfIn PDF document text
    • http://vanguardhungary.hu/userfiles/file/tutuporerowotalonowepuk.pdfIn PDF document text
    • http://arredamenticucinesiciliane.it/userfiles/files/wetiludonopazumabur.pdfIn PDF document text
    • http://plan.msu.ac.th/ckfinder/userfiles/files/visijak.pdfIn PDF document text
    • http://taiwangallant.com/uploads/files/202109052237294425.pdfIn PDF document text
    • https://www.loscam.com/lib_common/ckeditor/ckfinder/userfiles/files/21979585503.pdfIn PDF document text
    • http://gyn-ordi.at/myPix/file/wudivepewe.pdfIn PDF document text
    • https://renhedc.com/uploads/files/202109022018487737.pdfIn PDF document text
    • http://brilspa.ro/userfiles/file///wirilalodosiwizudufo.pdfIn PDF document text
    • https://radio-aurea.eu/files/file/64035233176.pdfIn PDF document text
    • http://tscyw.net/userfiles/file/20210912204437_svrpiw.pdfIn PDF document text
    • http://pharmabiosolutions.com/filespath/files/20210904004944.pdfIn PDF document text
    • http://corporatiegids.nl/uploads/files/modutawafimazebomu.pdfIn PDF document text
    • https://feedproxy.google.com/~r/Uplcv/~3/A3Ryygt5BCM/uplcv?utm_term=danza+de+dragones+pdfPDF link annotation