Malicious PDF — malware analysis report

Static analysis result for SHA-256 b444dbcda866a31c…

MALICIOUS

PDF

70.6 KB Created: 2021-02-23 02:42:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 576b09fd70c39d2e9b6bfc5f11c48334 SHA-1: 9962ae2bfeddc93be257d37fe5fba0eb4c231773 SHA-256: b444dbcda866a31c68fbb8ebd2d7d0af7f5767193d8df64aab37548dc021f857
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 0.9998

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://leonvi.ru/strik?utm_term=man+sings+golden+girl+theme+song+tiktok PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4446491/normal_602f4b0d9df61.pdfIn PDF document text
    • https://cdn.sqhk.co/rowofabuf/iiPnfy8/52379161183.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4490370/normal_5fd9237108953.pdfIn PDF document text
    • https://cdn.sqhk.co/vorowobenune/hDSRyig/zombie_3d_gun_shooter_real.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4473384/normal_602d3feb23c10.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4499979/normal_5fefc1ab3bc24.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470385/normal_602b4bdb0cc53.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502819/normal_5ff4f90fcdca0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413120/normal_60073d94d2f32.pdfIn PDF document text
    • https://cdn.sqhk.co/bekutojeke/fhaievS/webagakelifateb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4428033/normal_5fd88a3a8b5e8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387417/normal_6000c51e6b527.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4426572/normal_5fdb17756b02b.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://kepatuzazavew.epizy.com/bexaronewizegubezuvow.pdfIn PDF document text
    • http://devisufuxuvit.epizy.com/7319416840.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_off0000d6dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6DD 5308 bytes
SHA-256: ba91011494c13c0af2898cab8aba2128886139d188f5de404dcd37487a810bd8
font_01_sfnt_off0000e8c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE8C4 10668 bytes
SHA-256: b2524618dcf67a1e32b5081d9bf662dd23dabc434e9b0a450581097b246dae18