Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bead3e1d67fbde4…

MALICIOUS

PDF

75.9 KB Created: 2021-01-26 10:51:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-01
MD5: bc654ee075dee06a870583eb7619c1f6 SHA-1: dd1657f1d10bff01c262174558f13bb6d874232b SHA-256: 0bead3e1d67fbde465236d846fcbd081cb83848c643a6c64b02352c161135166
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://yafferge.ru/aws?utm_term=bernard+shaw+saint+joan+pdf In PDF document text
    • https://cdn.sqhk.co/nukuzulu/N2Uwqgj/84739910767.pdfIn PDF document text
    • http://bepegut.iblogger.org/domusaluv.pdfIn PDF document text
    • https://cdn.sqhk.co/minamojazi/ZYC3jhN/parent_approval_for_apps_not_working.pdfIn PDF document text
    • http://skidki-day.shop/ready_made_projects_for_electronics_and_communicationz172f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4488323/normal_5fd89ce1b2562.pdfIn PDF document text
    • http://lolkek.xyz/74272077570ga4ca.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/gopuze/pulse_amplitude_modulation_using_555_timer.pdfIn PDF document text
    • https://s3.amazonaws.com/jixeremipet/cystic_fibrosis_guidelines_brompton.pdfIn PDF document text
    • https://s3.amazonaws.com/lusegokaves/bluetooth_installer_free.pdfIn PDF document text
    • http://gakupoxefale.epizy.com/fojupodo.pdfIn PDF document text
    • http://relurifiluxel.epizy.com/accountable_plan_policy_template.pdfIn PDF document text
    • https://s3.amazonaws.com/fekife/pavakalojesuxufen.pdfIn PDF document text
    • https://s3.amazonaws.com/rixevozajixezos/atul_purohit_garba_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/benubapopikaj/card_counting_app_android.pdfIn PDF document text
    • http://banidokote.epizy.com/axure_tutorial.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_off0000ebe3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEBE3 5312 bytes
SHA-256: d69a140c548d74fe34e465241323de4b70da1ed3c0b0394fa3510f06dda1bfbd
font_01_sfnt_off0000fe09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFE09 11056 bytes
SHA-256: e64930d50a0e29e131b353f4469e6f21bbfbc52d03a158d02ccbff5968fa72d8