Malicious PDF — malware analysis report

Static analysis result for SHA-256 d459e6be988762e3…

MALICIOUS

PDF

82.6 KB Created: 2021-04-03 13:48:26 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 70ccd3c2f8c01b873fffdf082475ad2a SHA-1: 1131a9dd67e2a9a27dc80e164d92991468923494 SHA-256: d459e6be988762e3bc2e26a960a7dcfc647de207b1e781673af4908ae78db757
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 0.9996

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://bologen.ru/123?utm_term=msi+afterburner+beta PDF link annotation
    • https://cdn.sqhk.co/livaxipovage/hd4iijE/street_fighter_4_pc_free_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372361/normal_6049720b15327.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4365539/normal_5ff528cb85215.pdfIn PDF document text
    • https://cdn.sqhk.co/mewobonovagi/jchjkgj/manual_hydraulic_calculation_for_sprinkler_system.pdfIn PDF document text
    • https://cdn.sqhk.co/dabozijide/EhfKAaP/juvejusubililaxusos.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454163/normal_5fe8110f13fd9.pdfIn PDF document text
    • https://cdn.sqhk.co/bajilevone/jghhhjb/jujevubovu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409619/normal_6065c29d97437.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379048/normal_603bcf8e53121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474231/normal_5fe92b9732689.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/lazolu/customer_service_representative_job_description_examples.pdfIn PDF document text
    • https://s3.amazonaws.com/luworizesupox/fatal_fury_special_v1._1._0_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/620a8d1e-e43c-45d5-99e4-d22881f741e0/2005_cadillac_cts_engine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/868fd251-a2b4-4f35-aa6a-f713322ba995/gixajojomi.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/birthday_invitation_card_template_free_psd.pdfIn PDF document text
    • https://s3.amazonaws.com/zizene/towapi.pdfIn PDF document text
    • https://s3.amazonaws.com/gotijejaj/ldpe_sheet_manufacturing_process.pdfIn PDF document text
    • https://s3.amazonaws.com/kaxukok/tencent_holdings_limited_annual_report_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/xasovewipeje/kufisowok.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/android_studio_masterclass.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e73378da-8c0e-45e6-8791-f9b4895d73aa/7914756425.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_off0000f3df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF3DF 4644 bytes
SHA-256: ca13d1516cf2d0986fcf4869e5491aff2da215061c73cf801d66f0b72f948ed5
font_01_sfnt_off000103ae.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x103AE 15928 bytes
SHA-256: 658bb0a79691a35f698a623c7c0e1d089b28addf381b5b87db5f52ef741f1f31
font_02_sfnt_off00012dd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12DD5 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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