Malicious PDF — malware analysis report

Static analysis result for SHA-256 252b2d402d762c21…

MALICIOUS

PDF

73.2 KB Created: 2021-03-21 11:54:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 07a51743abd1661c23611f775b351dee SHA-1: 245a6e8405fd4c9616535a33dae464f519339c1a SHA-256: 252b2d402d762c21453814f07282ed436aae0e065980f7b10e2e7eef2b60abfc
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

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://dafemum.ru/strik?utm_term=predator+8750+generator+parts PDF link annotation
    • http://instapodarok.site/nixekazobaxataridemaneviazip1.pdfIn PDF document text
    • http://abwaab.su/pakabunolofepaxaxufuw6utf.pdfIn PDF document text
    • http://blablablacar.online/jofufeg4qgqr.pdfIn PDF document text
    • http://microdigitalmeter.xyz/dasabuwapatetakoxca4j2.pdfIn PDF document text
    • http://copyrightviolationcenters.com/8_codewords_answers3f6zr.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/wujanozo/abbaigaru_telugu_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/fidobakipivogit/zulow.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/30907987031.pdfIn PDF document text
    • https://s3.amazonaws.com/nefomojuwet/thick_colored_paper_sheets.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d101b5b-70a9-489b-b01d-b0e32bdce71b/genie_is550_a_homelink.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/195f5c52-fa2c-43de-899b-25698c1b56ce/baduwutonoluneroxawepuv.pdfIn PDF document text
    • https://s3.amazonaws.com/gisujubolidine/mojugijepimowubaniv.pdfIn PDF document text
    • https://s3.amazonaws.com/pesetufavo/piping_qc_interview_questions_and_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/skeletal_system_diagram_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/zaxawetawupo/when_to_spell_out_numbers_in_business_writing.pdfIn PDF document text
    • https://s3.amazonaws.com/sefabe/waburubaxuwumin.pdfIn PDF document text
    • https://s3.amazonaws.com/padosumifubobo/fonalufiru.pdfIn PDF document text
    • https://s3.amazonaws.com/wupagivoz/total_coliform_l_g.pdfIn PDF document text
    • https://s3.amazonaws.com/lulelepese/66505591139.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_off0000de6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE6C 5636 bytes
SHA-256: a2df4f4c79ef81b2c24d8cab8b0941d540b376b6544dd05488f77f27ba888707
font_01_sfnt_off0000f1b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF1B0 11292 bytes
SHA-256: e91eb7facbdc1a21f001bb68b380019cab5b87cea54ab25122474fba2e93a5a4

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