Malicious PDF — malware analysis report

Static analysis result for SHA-256 fdc654e8e1c7a905…

MALICIOUS

PDF

67.7 KB Created: 2020-12-18 14:00:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ca83b9ceb8659b6cf95409a09b4188f0 SHA-1: 868495cd597193c1fd101124e7008e61a77b5c17 SHA-256: fdc654e8e1c7a90532756ecb27589a84c17ca4f49f9f7f0e497d3d3605263f6d
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • 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://traffnew.ru/123?utm_term=crystal+saw+osrs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369788/normal_5f964c30db986.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407301/normal_5fd9bb4f2c5fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378853/normal_5f97b6a257088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_5f874e1635353.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414688/normal_5fdaf10488ac0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4450418/normal_5fd78ffff1481.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408346/normal_5fcd2e18423f0.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fce0a7e5d43e676cbd29f2e/t/5fd6e89172b1137fa989ae1a/1607919762388/wejutebinipuz.pdfIn PDF document text
    • https://s3.amazonaws.com/jivuxo/quality_assurance_system.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc304a32e34347c70520823/t/5fc5944f1972c46e3c5e1470/1606784080029/indian_visa_photo_requirements_for_us_citizens.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fdc826ac3cfda2dcf0aa550/t/5fdc9435cc15f942233eb078/1608291382846/rascal_full_movie_free.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc6b7658b9e860b7b1c0c38/t/5fd1ff8ceeaf2774ac922702/1607597965052/dolixu.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc59b6cbda9c57a97de3b41/t/5fc61ff4145a8629dc82e6bc/1606819831767/supimajimeguloruze.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbe36453c6ccf69f329b679/1606301253574/project_64_1.6_apk.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC02 4776 bytes
SHA-256: f31d95acdb65d06ef14261c527651c071ea95744946544909dcec63816297219
font_01_sfnt_off0000dc5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDC5C 11064 bytes
SHA-256: 0c723a2ee4495cf4e11fcdfb7f87c259f4af2ee6bf8507f556cdcb494a444753

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