Malicious PDF — malware analysis report

Static analysis result for SHA-256 5012f9ca6294c39c…

MALICIOUS

PDF

54.6 KB Created: 2021-09-18 12:27:45 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 5.11.3) First seen: 2021-10-27
MD5: fd6446f7842a4f1e4ecbbc682fb2e99a SHA-1: f9295370f84f000f4fd9dcb471e0808a6e3e148b SHA-256: 5012f9ca6294c39c1502ae504e49186647184ef93eef9e6e60958210e2cf87c9
124 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous external URIs, indicating it functions as a link farm. The ML classifier and ClamAV detection strongly suggest malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and numerous external links point towards a malicious document, potentially leveraging embedded JavaScript for exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.6383

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://philabc.ru/uplcv?utm_term=audio+song+downloader+for+pc PDF link annotation
    • http://krindustria.com.br/site/wp-content/plugins/formcraft/file-upload/server/content/files/16133b04c7902b---muributepevene.pdfIn PDF document text
    • https://qfuse.it/images/uploaded_files/ckfinder/files/1631588053_ea4325a23a.pdfIn PDF document text
    • http://gr-chem.com/upload/files/97805718826.pdfIn PDF document text
    • https://smartbrand.ro/mm/file/wusuxu.pdfIn PDF document text
    • http://foodchemsino.com/d/files/84240786031.pdfIn PDF document text
    • http://hanilkwanla.com/uploads/files/vipijasonim.pdfIn PDF document text
    • http://www.mecateengenharia.com.br/ckfinder/userfiles/files/79719186267.pdfIn PDF document text
    • https://onsale.social-push.cc/data/fckeditor/files/43988016876.pdfIn PDF document text
    • http://terwaarde.be/ckfinder/userfiles/files/45810967027.pdfIn PDF document text
    • http://tnshoppingbag.com/upfiles/file/walisamesuwolisomuvalo.pdfIn PDF document text
    • http://indemo.pl/Image/files/17495942924.pdfIn PDF document text
    • https://lwim-ouargla.dz/ar/files/vawexowi.pdfIn PDF document text
    • http://archiw.bibliotekalesmierz.eu/img/upload/files/4286483768.pdfIn PDF document text
    • http://aucoindeshalles.com/menu/file/koluwavekoze.pdfIn PDF document text
    • https://coolingrealestate.com/your-home-cleaner/FCKuploads/file/2310035695.pdfIn PDF document text
    • https://www.adler-leitishofen.de/wp-content/plugins/formcraft/file-upload/server/content/files/16141ae6d0eb0f---nolabowu.pdfIn PDF document text
    • https://jnnjhansi.com/userfiles/file/19965031982.pdfIn PDF document text
    • http://mylodge-naoshima.com/85405668178.pdfIn PDF document text
    • https://songhong-thudo.com/img/files/15109560205.pdfIn PDF document text
    • http://stagegator.scorchmark.com/stagegator/ckfinder/userfiles/files/vimubupovogamibet.pdfIn PDF document text

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