Malicious PDF — malware analysis report

Static analysis result for SHA-256 8243b043814bfb70…

MALICIOUS

PDF

77.6 KB Created: 2021-02-26 12:47:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: d09400b6f481a273f9989f765bd7f6ac SHA-1: cdb776f0590a868f27a8052d8728a963d596e8cd SHA-256: 8243b043814bfb70a0db98ed4243b935237498e716c6692c521f78b6bcfa2830
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-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://nipisod.ru/strik?utm_term=how+to+get+an+electrician+job+with+no+experience PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4449973/normal_602d0cce1d829.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/EjfvgeJ/vintage_italian_music_box.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366376/normal_60225b5a80734.pdfIn PDF document text
    • http://jalazekesofijot.medianewsonline.com/a_dolls_house_free.pdfIn PDF document text
    • http://jakitebalever.iblogger.org/reformas_borbonicas_economicas.pdfIn PDF document text
    • http://sevagawos.getenjoyment.net/jibebikupetazakazuko.pdfIn PDF document text
    • https://cdn.sqhk.co/wepugozotap/2hahNhg/69876846407.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408343/normal_5fd2c92cc8082.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/sogovekevi/focusrite_scarlett_2i2_gen_2_studio_pack.pdfIn PDF document text
    • https://s3.amazonaws.com/guxosa/fumixesagewevokodibadaken.pdfIn PDF document text
    • http://rizivubonulej.atwebpages.com/fosudezotobu.pdfIn PDF document text
    • http://wotidupodugi.myartsonline.com/computer_lab_assistant_job_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kelageketisefuv/44891211166.pdfIn PDF document text
    • https://s3.amazonaws.com/tibitexil/baila_conmigo_dayvi.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/cbse_guidelines_for_class_10_social_science.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/whatsapp_for_nokia_x2_java.pdfIn PDF document text
    • https://s3.amazonaws.com/pegebunov/llm_guide_columbia_2020.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_off0000f0ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF0EF 5352 bytes
SHA-256: 7f2e02e27caaed120d37156f5168ff6b11dfc98f3d48853c3141df97bab196b3
font_01_sfnt_off00010334.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10334 10976 bytes
SHA-256: 4658686454fb7e1b4f97b2bb0d8352a62581bc10dee2319d47c02dedb9ffc0fa