Malicious PDF — malware analysis report

Static analysis result for SHA-256 19f8ee413b154fd0…

MALICIOUS

PDF

69.1 KB Created: 2021-03-04 14:08:21 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 12a3fccbe2af1c6d42f379c3115901ad SHA-1: 02d7fe8d21b799792c2d5046f26a1837cb2baece SHA-256: 19f8ee413b154fd037db163d75b6027cce5a529bf9ef4c97c003f2a8d88ff592
96 Risk Score

Malware Insights

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

The file is a PDF document that contains a link to a suspicious URL, identified as a phishing attempt. The ML classifier and ClamAV detection strongly indicate malicious intent. The embedded URL is likely used to deliver a secondary payload or redirect the user to a phishing site.

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://resalured.ru/wix?keyword=pender+county+ems+jobs PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4383924/normal_603bd5a58535f.pdfIn PDF document text
    • http://pestore.pro/background_color_android_studiotf9ae.pdfIn PDF document text
    • http://watomidipokaki.22web.org/23122570252.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383689/normal_603845f82490b.pdfIn PDF document text
    • http://sosed.market/80382841362uuvu2.pdfIn PDF document text
    • http://apsmall.space/is_sherlock_holmes_a_real_story6l4ga.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478685/normal_5feff44916cb9.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/zarelusipofox/54105024118.pdfIn PDF document text
    • https://s3.amazonaws.com/zuwosil/gre_math_subject_test_questions.pdfIn PDF document text
    • https://s3.amazonaws.com/jozetej/architect_bold_font_free.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/nfl_strength_training_program.pdfIn PDF document text
    • https://s3.amazonaws.com/pevarijidasalop/somigirojotudobedupapof.pdfIn PDF document text
    • http://kabumosubeno.epizy.com/98682029629.pdfIn PDF document text
    • https://s3.amazonaws.com/nerugiraxura/back_core_strengthening_exercises.pdfIn PDF document text
    • http://velawomonoxejuz.epizy.com/potential_barrier_in_quantum_mechanics.pdfIn PDF document text
    • https://s3.amazonaws.com/sigobija/diy_pallet_platform_bed_frame.pdfIn PDF document text
    • https://s3.amazonaws.com/nabifovu/formation_biodynamique_montpellier.pdfIn PDF document text
    • http://tupemovon.rf.gd/nassau_bahamas_visa_information.pdfIn PDF document text
    • https://s3.amazonaws.com/jinotugiwomo/free_pc_antivirus_quick_heal.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_off0000d202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD202 5164 bytes
SHA-256: 95e9cdb372fcb64151e9daab4ef478b4dc630d19b34d7e14550e123c6fff6473
font_01_sfnt_off0000e38a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE38A 10536 bytes
SHA-256: d4193c0b4dd920a7fda4d96e4f0f24d294ef76002d3801f999293ed2a9b15289

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