Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1b759d5a950c851…

MALICIOUS

PDF

79.3 KB Created: 2021-04-08 18:28:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 7960c59c7f78813167fb219aa6a55e8e SHA-1: c98b3e0b15e220b41aa74b2ec51223167c5c91cf SHA-256: f1b759d5a950c85146b190f04bee1693d856e11a52340e88f5cbc321c29eb2ab
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI pointing to a URL that appears to be a lure for downloading a movie. The ML classifier and ClamAV detection strongly indicate malicious intent, classifying it as a phishing or trojan distribution. The presence of an external URI suggests the document's primary purpose is to redirect the user to a potentially harmful site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://botokaw.ru/strik?utm_term=scary+stories+to+tell+in+the+dark+2019+free+full+movie PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4404490/normal_6040e0ffe0e9e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369506/normal_5fc67c7423702.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416919/normal_601d20bfb9079.pdfIn PDF document text
    • http://betflixguvenilirmi.com/commando_2_song_mr_jatt6bl91.pdfIn PDF document text
    • http://apparently-home.com/glencoe_geometry_chapter_6_quiz_4_answersy321q.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451356/normal_6037c25e8bb34.pdfIn PDF document text
    • http://microbladingcertificationdfw.org/idiots_guide_to_ayurveda_barnes_and_noble71pea.pdfIn PDF document text
    • http://timurberg.ru/wolverine_f2d_saturnh1h6q.pdfIn PDF document text
    • http://vozivovog.scienceontheweb.net/pdf_file_translator_chinese_to_english.pdfIn PDF document text
    • http://yourlivehelp.com/465443971619m2d2.pdfIn PDF document text
    • http://jidokove.scienceontheweb.net/kozabaraviki.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4481667/normal_606ae013ac745.pdfIn PDF document text
    • http://justamorem.com/how_to_study_for_nasm_cptsdwgz.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/jifedefujodu/cisco_ise_2._6_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/goner_sheet_music.pdfIn PDF document text
    • http://dipagepe.atwebpages.com/wizawoperodip.pdfIn PDF document text
    • https://s3.amazonaws.com/kiguteperilodu/black_bush_golf_club_timesheet.pdfIn PDF document text
    • https://s3.amazonaws.com/wujodibu/tobipiganuguramonijovos.pdfIn PDF document text
    • https://s3.amazonaws.com/geraromu/17264357417.pdfIn PDF document text
    • https://s3.amazonaws.com/musoxifuvitalo/8231543547.pdfIn PDF document text
    • https://s3.amazonaws.com/fipijife/werewawimoluluzova.pdfIn PDF document text
    • https://s3.amazonaws.com/jifedefujodu/27522171440.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_off0000e7d1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7D1 5952 bytes
SHA-256: 3c6ae060abfa71584f5570e7a2d30e380d6e4ee42075c0471a0d23d37ba760cf
font_01_sfnt_off0000fbe1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFBE1 10952 bytes
SHA-256: 3448d8b271197a8633ca3e7c7fe9b116915ee2dd90a6da4fa1cbb14074eab7d6
font_02_sfnt_off0001216c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1216C 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

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