Malicious PDF — malware analysis report

Static analysis result for SHA-256 b4fb6cc93ae05ab6…

MALICIOUS

PDF

163.9 KB Created: 2021-03-29 05:06:54 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-24
MD5: be415297ad8537c80c097ee39db2924e SHA-1: d18f2ef01e4fac858794bb5a2406564432db2fbc SHA-256: b4fb6cc93ae05ab6afab5837c1234a47e0e12f24aafd655b4344c41edc67ec9e
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 0.9994

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://jumiwimov.ru/award?keyword=ley+de+arbitraje+en+colombia+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4421464/normal_5fcc8adf9f4fe.pdfIn PDF document text
    • https://cdn.sqhk.co/dabigewom/gjfhjia/23962147003.pdfIn PDF document text
    • https://cdn.sqhk.co/zidulibu/ieHjfhg/tusefu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407081/normal_605b103b791a5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4526930/normal_5ffe0526a10bf.pdfIn PDF document text
    • http://euroshopmn.space/mee6_custom_commands_listfql5l.pdfIn PDF document text
    • http://thrivewebs.com/fegulosamudupig7obv.pdfIn PDF document text
    • http://tohld.in/poxifaporilezobesunqi4a.pdfIn PDF document text
    • http://lasleymarkt.ru/rain_dial_rd_900_ext_manualhs31a.pdfIn PDF document text
    • http://goproonly.com/lafegarokebizodilim6yxtk.pdfIn PDF document text
    • https://cdn.sqhk.co/tapuvimixaxo/djacJhj/infinity_sign_tattoo_designs.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/fojaxexino/safuva.pdfIn PDF document text
    • https://2e4d99de-9d37-4ce2-abd5-0bbccafdbe51.filesusr.com/ugd/33a2e4_0dba8858f55143c39952f129600caf63.pdf?index=trueIn PDF document text
    • https://49550882-97ce-44db-a38b-6e383bb81149.filesusr.com/ugd/062c90_5845a07e7fec4f1591bea111398a55ec.pdf?index=trueIn PDF document text
    • https://s3.amazonaws.com/voxipanovigepiv/zewix.pdfIn PDF document text
    • https://s3.amazonaws.com/vitelitubovuluj/25859832024.pdfIn PDF document text
    • https://s3.amazonaws.com/jusuberu/how_to_add_arabic_keyboard_in_android.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/git_commands_to_push_code_to_new_repository.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/allergic_contact_dermatitis_nice_guidelines.pdfIn PDF document text
    • https://95fbbc11-640f-4658-acdf-6e09da746871.filesusr.com/ugd/e42ee3_e95850d67ffc431d84adc832bdd50062.pdf?index=trueIn PDF document text
    • https://f77c8dad-41d7-4a8f-8d8d-c05149a3a236.filesusr.com/ugd/36d413_2f70279d4cac4ca4912e4a4ca9a6f72d.pdf?index=trueIn PDF document text
    • https://769966b8-4adc-437e-bba8-f198cf6e171b.filesusr.com/ugd/41a0b6_68fe2663361040f3b5016de4500680ba.pdf?index=trueIn 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_off00024536.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x24536 5380 bytes
SHA-256: e220fa2707538dc79ca785aaff6cd369e26475c95c3912f7d1c9673a7e715ef6
font_01_sfnt_off00025780.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x25780 12584 bytes
SHA-256: ecf179add2fe3051e8a81383ab416c3e4bb54e6c5a41294fe98be07dd6eef91a

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