Malicious PDF — malware analysis report

Static analysis result for SHA-256 a8c603892408c1a7…

MALICIOUS

PDF

45.3 KB Created: 2021-09-05 02:29:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-07
MD5: e42ad660f6e42f22438144a99c19da21 SHA-1: ef960661f3cb6a46343618a0ffa01c474e8e9f39 SHA-256: a8c603892408c1a7ae976897b9c945f0d4ed04502f951770609d44ceb5d9f1f1
174 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF file is identified as malicious by ML classifiers and ClamAV, exhibiting characteristics of a phishing lure. It contains an image-only interface with embedded links pointing to compromised CMS upload directories, suggesting an attempt to trick users into downloading further malicious content or visiting phishing sites. The presence of numerous external URLs on disposable or compromised hosting reinforces the phishing and potential malware distribution intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7115

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
  • Image-only document with action trigger (screenshot lure) medium PDF_IMAGE_LURE
    PDF has 1 image(s), only 0 text block(s), carries a click-outward action, and is only 45 KB — typical shape of a phishing lure where a full-page screenshot hides a clickable button that launches or submits to an attacker URL.
  • PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARM
    PDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://queure.ru/uplcv?utm_term=megaminx+last+layer+pdf PDF link annotation
    • http://gabortech.com/admin/file/42974579711.pdfIn PDF document text
    • http://naasschoolofmotoring.com/fckeditor/userfiles/file/66403832342.pdfIn PDF document text
    • http://luisacortesearchitetto.it/userfiles/files/79204267545.pdfIn PDF document text
    • https://www.carlosfunes.es/wp-content/plugins/formcraft/file-upload/server/content/files/160fffd8de34f1---95301887767.pdfIn PDF document text
    • http://beerskiboot.com/img/upload/file/redogesejewezifagabesovul.pdfIn PDF document text
    • https://bowenpainter.com/wp-content/plugins/formcraft/file-upload/server/content/files/1609809221108e---56796269181.pdfIn PDF document text
    • http://perfectthesale.com/wp-content/plugins/formcraft/file-upload/server/content/files/160890b6f5d7dd---tomujijosilenetosefinava.pdfIn PDF document text
    • http://mrbossamktown.com/uploads/files/78881263640.pdfIn PDF document text
    • https://prestinieurope.com/userfiles/files/nogumakofulolevidivavo.pdfIn PDF document text
    • https://www.fifatravels.com/wp-content/plugins/formcraft/file-upload/server/content/files/16105824e221b8---1691873518.pdfIn PDF document text
    • https://lisacutler.com/wp-content/plugins/formcraft/file-upload/server/content/files/16080cd26c739d---zilamavoji.pdfIn PDF document text
    • https://ubk-sad.de/azubi/userfiles/files/24968420021.pdfIn PDF document text
    • http://fashioneducation.ru/userfiles/file/38201243990.pdfIn PDF document text
    • http://nhatngungoisaoxanh.com/upload/files/87645936681.pdfIn PDF document text
    • https://www.traveltimevipp.com/wp-content/plugins/super-forms/uploads/php/files/88f63d81ecfdbee4ed1b98490d736ab9/24555108596.pdfIn PDF document text
    • http://jorakaygame.com/ckfinder/userfiles/files/juzaxovise.pdfIn PDF document text
    • https://40parables.com/wp-content/plugins/super-forms/uploads/php/files/23db6ce84557a4d360f027b0d2d0918a/60123908562.pdfIn PDF document text
    • http://studiolaviano.it/userfiles/files/17235470812.pdfIn PDF document text
    • http://mydreamtuscanwedding.com/editor_up/zexovukaw.pdfIn PDF document text
    • https://yingzhaoliuart.com/upload/file/37838786876.pdfIn PDF document text
    • http://yonseri.org/userfiles/files/63662153316.pdfIn PDF document text
    • http://limpiasol.com/wp-content/plugins/formcraft/file-upload/server/content/files/160914aef57ea2---46914006716.pdfIn PDF document text
    • https://khambenhxahoi115.com/images/files/nuruwalabepofapulobaka.pdfIn PDF document text
    • http://steakclubhn.com/campannas/file/76892074063.pdfIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

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