Malicious PDF — malware analysis report

Static analysis result for SHA-256 f539ca829e034fbd…

MALICIOUS

PDF

67.4 KB Created: 2020-11-22 09:04:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: fb5c96d257acff2f670ead48d346f4b3 SHA-1: 95f08e307d08ae3095d1297dd7aebe41e33ef3df SHA-256: f539ca829e034fbdc69b6c20fac2222317b13218a38ba6468c88dbd48ad7be25
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://traffine.ru/123?utm_term=mary+joseph+and+baby+jesus+clipart PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386621/normal_5f9cfb07b5cf3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4496571/normal_5faf4478329cb.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://s3.amazonaws.com/jipowumat/pdf_flip_book_maker_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/divelikubapiwaj/ravusasinupuradik.pdfIn PDF document text
    • https://s3.amazonaws.com/regovadeje/core_practice_4a-_8_crossword_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/palikuvexake/68236271312.pdfIn PDF document text
    • https://s3.amazonaws.com/fulosobezur/nirenivinizevokexuv.pdfIn PDF document text
    • https://s3.amazonaws.com/xeroguru/bapuxavijogexe.pdfIn PDF document text
    • https://s3.amazonaws.com/naramuro/79584536963.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/planning_programming_and_budgeting_system.pdfIn PDF document text
    • https://s3.amazonaws.com/runuzitexokol/bond_duration_excel_template.pdfIn PDF document text
    • https://s3.amazonaws.com/xesigeze/breezin_thru_theory_answer_key_chapter_7.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/asvab_practice_questions.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_off0000bc92.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBC92 5368 bytes
SHA-256: 2052448156c3d1d0bf062a7e095dfb7aca5c49b681923fb0985e61bde42f9dcd
font_01_sfnt_off0000cecf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCECF 10488 bytes
SHA-256: 70b7a52290372fdb5470d36e7d0d0423da19d41ad3bdc1fd792cb57daeb4add1
font_02_sfnt_off0000f2b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF2B6 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361