Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a3f7c3d2bcbf04c…

MALICIOUS

PDF

54.6 KB Created: 2021-09-20 19:58:53 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: 388639844ee8491086e553112c236385 SHA-1: 47a5254ab560396d38104a0873da32753b7906c1 SHA-256: 0a3f7c3d2bcbf04ca9c2f24ee007b5a954f11e64d1c6acfc350b7fcd37572b87
154 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains numerous embedded URLs, many of which point to compromised or disposable domains, suggesting a link farm designed to redirect users to malicious content. The document body is unreadable binary data, indicating it's not intended for direct user interaction but rather as a container for malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6018

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://samsunyapi.com/userfiles/files/35514019646.pdf In PDF document text
    • https://www.truckersplantparts.co.uk/ckfinder/userfiles/files/wuxadijetijubovipuj.pdfIn PDF document text
    • http://metzpaintings.com/wp-content/plugins/formcraft/file-upload/server/content/files/1613e83414dc4a---jesobidewepajer.pdfIn PDF document text
    • https://tahubunting1.com/contents/files/borarejajovigup.pdfIn PDF document text
    • http://marine-inox.com/i/File/47037227269.pdfIn PDF document text
    • http://hemeringen.de/ckeditor_ablage/userfiles/files/98244512554.pdfIn PDF document text
    • http://wish-pharma.com/upload/files/liditemagovalut.pdfIn PDF document text
    • https://ichapps.com/ichapps/ckeditor-ckfinder-integration/uploads/files/46329546925.pdfIn PDF document text
    • http://righetti-ticozzi.it/userfiles/files/37291375553.pdfIn PDF document text
    • http://nyitotthaz.hu/userfiles/files/fopuboxuzolamamolasidelal.pdfIn PDF document text
    • http://jingyilin.org/uploads/file/zabufosolukijidil.pdfIn PDF document text
    • http://vinhhangvien.com/upload/files/pegakazexuvorepupafas.pdfIn PDF document text
    • https://www.sophrologue-nimes.fr/upload/news/files/sobuwifazofage.pdfIn PDF document text
    • https://www.c2commercial.com/wp-content/plugins/super-forms/uploads/php/files/25bc6c7ec3399fdc3078a312b170a4d9/xavanabarawizovunar.pdfIn PDF document text
    • http://lumieretvie.com/userfiles/file/54548037264.pdfIn PDF document text
    • https://playgametoday.ru/wp-content/plugins/super-forms/uploads/php/files/8d7bc36dedd3a1b88c572783eac26dba/78568520767.pdfIn PDF document text
    • http://ms-beauty.com/ckfinder/userfiles/files/13723214823.pdfIn PDF document text
    • http://iwayman.com/uploadfiles/file/210906184746925240tuv0d8.pdfIn PDF document text
    • http://emachn.com/data/attachment/file/31193097777.pdfIn PDF document text
    • https://soechi.id/userfiles/file/77871112517.pdfIn PDF document text
    • http://nova-auto.com/upload/wikebozajulo.pdfIn PDF document text
    • http://police8coop.com/UserFiles/file/43111336572.pdfIn PDF document text
    • https://greenturtleproductions.com.au/wp-content/plugins/super-forms/uploads/php/files/2a81c13a5ab6fce9b7e3423bd9e2703d/xegumagatul.pdfIn PDF document text
    • http://files.ibiza-ferien.de/file/37044143143.pdfIn PDF document text
    • http://satyavnetworks.com/fck_upload_images/file/kezigu.pdfIn PDF document text
    • http://valentine.tutaylamhet.com/storage/ckfinder/files/vejukazodemoxoguwatofepi.pdfIn PDF document text
    • http://greatwalledmond.com/ckfinder/userfiles/files/lerigotoxuropudebiz.pdfIn PDF document text
    • https://feedproxy.google.com/~r/1eyvgo/aqOO/~3/fzgW7-mxBc0/uplcv?utm_term=country+flags+printable+pdfPDF link annotation

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