Malicious PDF — malware analysis report

Static analysis result for SHA-256 da704084eb85ffcb…

MALICIOUS

PDF

77.7 KB Created: 2021-03-29 15:25:57 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0038469e522e420e4e58239d929e0202 SHA-1: 12e60aaff36a22a29741ed82679c56ab5df96538 SHA-256: da704084eb85ffcb2c522fb3e9c2b1edeac80238598f484089765468c745ee08
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URI that redirects to a malicious domain, likely for phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, contains text fragments suggesting a lure related to children's reading material.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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://gimoguvi.ru/strik?utm_term=espa%25C3%25B1ol+lecturas+tercer+grado+francisca+y+la+muerte PDF link annotation
    • http://kaboliwup.mypressonline.com/sunogolusipodafuwenijaz.pdfIn PDF document text
    • http://fejavodexata.getenjoyment.net/who_breastfeeding_recommendations_2020.pdfIn PDF document text
    • https://wufikaxom.weebly.com/uploads/1/3/4/8/134883002/dibavapunufek_xazabovarun_vinuf_papaguwir.pdfIn PDF document text
    • https://setuzenizenu.weebly.com/uploads/1/3/5/9/135973655/xufikivilebizi_xapodifozida.pdfIn PDF document text
    • https://cdn.sqhk.co/pipagalax/tjagdSf/44902955239.pdfIn PDF document text
    • https://cdn.sqhk.co/letareximo/5ghBajj/knives_out_wallpaper_iphone.pdfIn PDF document text
    • https://cdn.sqhk.co/fujotojaxob/bvja7ja/34182301115.pdfIn PDF document text
    • https://cdn.sqhk.co/gewewoturila/x3Fghgh/losajatamudozima.pdfIn PDF document text
    • https://cdn.sqhk.co/nexapebevux/a8Whjgj/anaganaga_o_premakatha_movie_songs.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/fukezavazuj/vengeance_demon_hunter_guide_7._2._5.pdfIn PDF document text
    • https://234d5d8d-19c9-4cab-a884-dd0775662658.filesusr.com/ugd/fb7225_fb4d52b5cc2b4a58b912ec0a87bec47e.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/fixararololu/70829492004.pdfIn PDF document text
    • https://s3.amazonaws.com/diwitapezu/franchise_tax_report_texas_2018.pdfIn PDF document text
    • https://8c330184-3457-40de-b162-e34763a77ed1.filesusr.com/ugd/0aae61_ea07f0faf9ff47709536f3ca876ff163.pdf?index=trueIn PDF document text
    • http://talakukatutevib.epizy.com/48459011689.pdfIn PDF document text
    • https://7a69a04d-b0b3-478e-a927-895b34d3dd44.filesusr.com/ugd/159848_f5b894dda2b743128f8ed05693e13498.pdf?index=trueIn PDF document text
    • http://sazojojuw.rf.gd/union_budget_speech_2020_19.pdfIn PDF document text
    • https://s3.amazonaws.com/gonasidupij/how_many_calories_in_a_jersey_mikes_sub.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_off0000eca2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xECA2 5748 bytes
SHA-256: a5f8b8a8b56a61b197425d09dae37b36eddd6f1386456c2c97256e43bad874eb
font_01_sfnt_off0000ffe8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFFE8 12008 bytes
SHA-256: 13ac8188ba051e4c4ffc1cc523481a9ba9fb9b4292a17feee0d952818fa72af3

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