Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cce3f689983b04c…

MALICIOUS

PDF

71.8 KB Created: 2021-02-25 15:59:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: aca8ec5135bd6097f09ce62c9aa22120 SHA-1: 18801d8f9c6db72e5cf7a1edd397875e66190330 SHA-256: 2cce3f689983b04cc86583be7287576e85f4fa14405b39a04428cc1c7ca31c2c
96 Risk Score

Malware Insights

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

The file was detected as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains an embedded URI pointing to a suspicious domain, likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains metadata suggesting it was generated by wkhtmltopdf, a tool often used to create malicious PDFs.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://seumenha.ru/award?keyword=is+love+blind+cast+now PDF link annotation
    • http://taxevidel.medianewsonline.com/the_silence_of_the_lambs_clarice.pdfIn PDF document text
    • http://saudiautoinsurance.com/what_does_a_prosecution_lawyer_do_in_court01yj0.pdfIn PDF document text
    • http://nopotaz.medianewsonline.com/osha_aerial_lift_training_requirements_2020.pdfIn PDF document text
    • http://fuvesozufinefi.medianewsonline.com/sejatutuzaruzase.pdfIn PDF document text
    • http://xulodol.mygamesonline.org/physics_project_topics_high_school.pdfIn PDF document text
    • http://likedizar.medianewsonline.com/teredegelefemuxololirig.pdfIn PDF document text
    • http://rm-swis-mine.com/safari_rv_brochure_archivejyc6q.pdfIn PDF document text
    • http://soldatskaya6.ru/ligafakerepiqb3dg.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://vubelifijam.atwebpages.com/25512509129.pdfIn PDF document text
    • https://s3.amazonaws.com/dupula/business_planner_free.pdfIn PDF document text
    • https://s3.amazonaws.com/zubuwujoxom/tensile_and_compression_test_lab_report.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/sarcoidosis_pathology_report.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/alzheimer_s_prevention_food_guide.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_off0000dd60.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD60 5068 bytes
SHA-256: bf48429746fc448e40be78d70a24813ff4a04ce90b4e6480a9e93e86d3cd2d65
font_01_sfnt_off0000eec3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEEC3 10540 bytes
SHA-256: b8cf26aa71d7bf7b709c56e35294dec5f2e02704d2f291ce038d35e87ce511f8

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