Malicious PDF — malware analysis report

Static analysis result for SHA-256 efbbcdef7275d1f5…

MALICIOUS

PDF

70.7 KB Created: 2020-12-16 02:49:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: df8a3402e85891d1927ffee880e4e13f SHA-1: 1b9f63b766438fcfe243daec73135e99bde3c91d SHA-256: efbbcdef7275d1f5cba2ff75c7fd9e6739b6c4715de04154c85e0a904a86fa45
96 Risk Score

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 0.9997

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
  • 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://traffset.ru/strik?utm_term=social+facilitation+psychology+definition PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4417528/normal_5f9854c388eb4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/47692473465.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc70445d64a3343a5f62fe3/t/5fcb3afa1df7590d80dc7520/1607154431854/chicken_gun_mod_menu_1._9._9.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc27a90c14dfd36fefb8bc0/t/5fc4d521e18c5c478e93735d/1606735138938/nopiwunotuzarefasiwavo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3647d6609fd0ee7a157c3/t/5fc88ba4ec83506b047d2dc9/1606978487423/sugoxowetobubodomiladewot.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/1141161238.pdfIn PDF document text
    • https://s3.amazonaws.com/widofafane/xepewivesexuwuvop.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisi/vuwudamazulolojefituso.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbdf80c3c02f22b9dd2f99b/1606285328464/web_mail_hawaii.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/51ca2800-1b23-4217-b512-8d48e5f034b2/73822124677.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/biomass_energy_pros.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5617888c99b6d37c543b2/t/5fcb59afb6b7366152f742a3/1607162289302/chemistry_physics_simulation_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc4d0d3a3bf4b14abc221fa/t/5fcfc89553299038e86e52e4/1607452822993/shipwrecked_movie_rotten_tomatoes.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_off0000d60a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD60A 5528 bytes
SHA-256: 4fb109fa269deaddfbd50fe352c370c93346716d7dfecdcdc52da421d62c1f29
font_01_sfnt_off0000e8df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8DF 11036 bytes
SHA-256: 4a838c5595df3d047f33612a86dc9eb6195e50f35219d931cdac4ca7b4bb1d7d