Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f97f92fbaf11558…

MALICIOUS

PDF

76.8 KB Created: 2020-11-19 04:11:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ca17a1392b0bb4731bd0dade133ca066 SHA-1: ddcb4108cd0da74f0dbb67323b926daa88d9a0ef SHA-256: 6f97f92fbaf115588c40f54cd652d33a3c2268414c30061b04012a96a9fac1f0
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://traffine.ru/strik?utm_term=como+preparar+pasta+texturizada+para+muros PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4369904/normal_5f88a78c407d8.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4413019/normal_5f9abd581fd51.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380700/normal_5fa893b251024.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/3045192c-b3e9-4f78-bacb-12ef5ecadd0a/adverbs_of_time_esl_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b89a7899-c64c-41b2-bfea-472ea5b0d067/claude_j_edney_funeral_home.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/47b41b0b-fb71-4000-bac8-ef669cc5041c/papilifesavale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf02222d-b554-46fe-a356-913998528de6/47065265304.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2eba464b-f086-4998-977d-a616abc0d40a/76671864200.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07f5285c-2cea-4b8f-8150-a0d17dcd72dd/style_toward_clarity_and_grace.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2cf8016f-a285-4d7c-be97-ddf316b9f1dc/60430653150.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2f1a270-6cbe-4c0e-b4aa-79c08c32dfa4/roman_numerals_xo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE027 4992 bytes
SHA-256: 42a0f8912506d8a5c004eb4d267b6f26e67976ada8322d34af7e1746fad07b9a
font_01_sfnt_off0000f129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF129 11532 bytes
SHA-256: a89b463bb2761e8e7a18f02914c46b2d696e36b15c0437fced2bc179c105353d
font_02_sfnt_off000116ac.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x116AC 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3