Malicious PDF — malware analysis report

Static analysis result for SHA-256 e265177c390325ca…

MALICIOUS

PDF

94.2 KB Created: 2021-05-17 00:24:27 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 809fa02359bdf5c6d3807cfd6d5997ab SHA-1: 8160c80a2d589b92c4616e498042c44401f00213 SHA-256: e265177c390325caa580b8aff1e1062e02d999a682f90c95680efead2d09fb5a
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains numerous embedded URLs that likely serve as lures for downloading further malicious content, disguised as educational or informational documents. The presence of these URLs suggests an attempt to trick users into accessing potentially harmful resources.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://ponafet.ru/strik?utm_term=biology+dna+replication+worksheet+answer+key+pdf PDF link annotation
    • http://laludinemolat.sportsontheweb.net/drawing_tutorials_for_beginners_download.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412584/normal_5fc5f31a854b8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388611/normal_5fe3200cb5bbf.pdfIn PDF document text
    • https://cdn.sqhk.co/lizubenesowi/i0hjnjh/hearts_of_iron_4_dlc_guide.pdfIn PDF document text
    • http://carinsusa.info/spectrum_math_workbook_grade_8_free92cvz.pdfIn PDF document text
    • https://cdn.sqhk.co/mobubivifa/ibkjahb/e_wallet_rm30_application.pdfIn PDF document text
    • http://gopidap.scienceontheweb.net/ana_catalina_emmerich_libros.pdfIn PDF document text
    • http://esplus.pro/liwulatutex8ayo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4421629/normal_5fdc4f8c6011f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394071/normal_600965ce86d6e.pdfIn PDF document text
    • http://zoomita.space/mabew6f670.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479441/normal_5ff0bff327ac7.pdfIn PDF document text
    • http://csxmoney.info/how_long_do_maytag_neptune_washers_lastdqpjw.pdfIn PDF document text
    • http://rasprodavaika.ru/arid_areas_in_egyptf5z1t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4479236/normal_5fec7a582a718.pdfIn PDF document text
    • http://difanitukovu.mywebcommunity.org/17138206524.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475209/normal_5ffc55565dc5a.pdfIn PDF document text
    • http://vumajuzatijerak.getenjoyment.net/barriers_to_effective_communication_in_a_classroom.pdfIn PDF document text
    • http://kojijeku.mygamesonline.org/23859473507.pdfIn PDF document text
    • http://ladiluvame.mypressonline.com/sketchup_make_component_unique.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382631/normal_5fd60c6eab29f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447089/normal_601fd9ec896df.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://bifiwapaz.onlinewebshop.net/drosophila_mutations.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_off000131d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131D1 5724 bytes
SHA-256: 3f0dcb237da001f1c69e5e0456d2edb9d720d8645490ca7e6f208c09844696df
font_01_sfnt_off00014569.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14569 11064 bytes
SHA-256: b0279621d0a5e69c9c60c067ed55bba8795a6e7662455629d75deac21a8c5ff4

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