Malicious PDF — malware analysis report

Static analysis result for SHA-256 eaa714d096dbadfb…

MALICIOUS

PDF

72.5 KB Created: 2021-02-26 22:19:19 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e16887422e89c8ea51290d781387db35 SHA-1: 985d835c0ffd1b86b12f2f2739a7df9a4fbac2c4 SHA-256: eaa714d096dbadfb23c79e01c5a096e71de22d212bbf178120163cd0182a01ff
96 Risk Score

Malware Insights

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

The PDF file was detected as malicious by ML classifiers and ClamAV, indicating a phishing or trojan payload. The document body, though heavily obfuscated, contains text related to simplifying a block diagram, likely a pretext to direct the user to the malicious URL. The embedded URL `https://nipisod.ru/award?keyword=simplify+the+following+block+diagram` is the primary indicator of compromise, suggesting the document is designed to lead users to a phishing or malware distribution 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://nipisod.ru/award?keyword=simplify+the+following+block+diagram PDF link annotation
    • http://momentikshop.space/501402348185jt3f.pdfIn PDF document text
    • http://shoop-ft.ru/tesurasusjwnlw.pdfIn PDF document text
    • http://vugekowuzujed.scienceontheweb.net/how_much_weight_will_i_lose_with_gastric_sleeve_calculator.pdfIn PDF document text
    • http://idealslimitalia-ufficiale.site/criminal_case_full_hile_apki4aai.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4502833/normal_60348a7e98d74.pdfIn PDF document text
    • http://lololoj.sportsontheweb.net/2000_ford_ranger_replacement_rocker_panels.pdfIn PDF document text
    • http://kamikofonem.mygamesonline.org/25670024340.pdfIn PDF document text
    • http://bumawusuka.mypressonline.com/philosophy_of_social_science_degree.pdfIn PDF document text
    • https://cdn.sqhk.co/fujalapevame/a7hajcw/nuvuxijinogugo.pdfIn PDF document text
    • https://cdn.sqhk.co/wobimore/viajgjh/bird_papa_bubble_crush.pdfIn PDF document text
    • http://gapagal.mywebcommunity.org/95430532740.pdfIn PDF document text
    • http://checkmycredit.info/abbreviations_in_formal_writingk3sh5.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/bajuse/mosefuwasapaliwebupo.pdfIn PDF document text
    • http://pojozija.onlinewebshop.net/netgear_ac1600_modem_router_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/jemisajoda/vava_milk_frother_user_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tobito/labor_contract_proposal_template.pdfIn PDF document text
    • https://s3.amazonaws.com/povelenavuviw/coordinate_grid_worksheets_2nd_grade.pdfIn PDF document text
    • http://zowofiz.myartsonline.com/lawufudipifuxarukogu.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_off0000de97.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE97 5892 bytes
SHA-256: 456854e21426d64596f3edbf97bec2d1a8ab4d4be2d517fbd7bd8cb5a70054f3
font_01_sfnt_off0000f299.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF299 10020 bytes
SHA-256: 876073087395d5392c5702e11b3b1d8773a3b78994a22455948e2c2367b8a554

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