Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d5a32fc4de4cd4a…

MALICIOUS

PDF

66.7 KB Created: 2021-02-11 17:02:26 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 83d6fd04254c1e2cfb2c816de7919fd4 SHA-1: 238b5802c8cee2e16f29b4e08880e9b7810edf33 SHA-256: 4d5a32fc4de4cd4a5bc3399b22f7ea20b9244013490aa2f11b49622c435fa053
126 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
  • 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.
  • 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://seumenha.ru/wix?keyword=grade+4+module+5+answer+key PDF link annotation
    • https://kiwitelovig.weebly.com/uploads/1/3/4/3/134358902/386c01.pdfIn PDF document text
    • https://bexukisutiso.weebly.com/uploads/1/3/0/8/130873741/7063146.pdfIn PDF document text
    • http://logmeinnow.xyz/inelastic_collision_problems_worksheetj4ys0.pdfIn PDF document text
    • https://mujabimebedegi.weebly.com/uploads/1/3/4/2/134234846/bd9f0f2.pdfIn PDF document text
    • https://cdn.sqhk.co/xogovofofi/b6Cihjb/space_flight_simulator_mod_apk_download_android_1.pdfIn PDF document text
    • https://boretenewur.weebly.com/uploads/1/3/1/4/131453221/1500370.pdfIn PDF document text
    • http://itabody.space/causas_del_ausentismo_escolarujxz0.pdfIn PDF document text
    • http://help-lnstagram-verifycopyrgiht.com/vubawawubebikixafezosixelwxav.pdfIn PDF document text
    • https://cdn.sqhk.co/fizuborugas/jMbjghh/dragon_quest_la_quete_de_dai_crunchyroll.pdfIn PDF document text
    • https://ninitirasaru.weebly.com/uploads/1/3/5/3/135317350/7102206.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/rghji7p/survivalcraft_2_apk_download_gratis.pdfIn PDF document text
    • http://copyrightreports.com/speed_motorcycles_costa_ricavo1xa.pdfIn PDF document text
    • https://timodidub.weebly.com/uploads/1/3/1/3/131379596/638ba4d3c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470543/normal_5fd3a44982e32.pdfIn PDF document text
    • https://piwomokoxik.weebly.com/uploads/1/3/5/3/135335333/wukoxipitosisoxale.pdfIn PDF document text
    • https://kirorasonosa.weebly.com/uploads/1/3/4/7/134743937/reluvemikoterixej.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4386822/normal_5fd7f9f4b0178.pdfIn PDF document text
    • https://fumuradowije.weebly.com/uploads/1/3/0/7/130739974/xomazudewubeke-jiwup.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c933.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC933 5472 bytes
SHA-256: 3ec3a5493aa9c595c9056b2e8cd95c85b00303e0d9809eb8b7637f9a6137ad9a
font_01_sfnt_off0000dbdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBDC 9976 bytes
SHA-256: 4e9584ca28dc096962dfa49be6756f419b403e424dcb1d8d1352f75d685bf6e8