Malicious PDF — malware analysis report

Static analysis result for SHA-256 c12090b199680ac8…

MALICIOUS

PDF

81.4 KB Created: 2021-02-24 13:37:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-26
MD5: c5339bdee2b46b6a5294870d9a00f1d3 SHA-1: aaa4b5a26900374d1395f0d4fba6cc7b3a2a302b SHA-256: c12090b199680ac88c0feb779791b9c4a2e82aca5dcbf51d124097b66323c9dd
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that masquerades as a guide for 'Paper Mario: The Thousand-Year Door'. This URL, https://jacksth.ru/wix?keyword=paper+mario+the+thousand+year+door+guide, is likely used to redirect the user to a phishing or malware distribution site. The ClamAV detection and ML classifier strongly indicate malicious intent, likely related to phishing or trojan delivery.

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://jacksth.ru/wix?keyword=paper+mario+the+thousand+year+door+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367304/normal_5fdbec836771a.pdfIn PDF document text
    • https://fimuvuxufubewi.weebly.com/uploads/1/3/4/4/134442536/zodovejine-wonesowak.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4503692/normal_5ff70ab3b3a31.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4494673/normal_601f13c8ee162.pdfIn PDF document text
    • https://riligasiguvenu.weebly.com/uploads/1/3/5/3/135392009/roduzalu-zuvafikafikob-dupugufax-kuvuvula.pdfIn PDF document text
    • https://cdn.sqhk.co/dasofuduveje/ji4hc2B/star_wars_x_wing.pdfIn PDF document text
    • https://laxopewivizi.weebly.com/uploads/1/3/5/3/135394850/7234940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5fdb00d8cb994.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485710/normal_601dcb2ac7215.pdfIn PDF document text
    • https://cdn.sqhk.co/kinibemazoz/iiBEhh6/candy_crush_friends_saga_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/nupumusu/jagjZgc/zombie_defense_games_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481520/normal_5fcfed36e497b.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/kulinisokakewi/formal_email_apology_for_delay.pdfIn PDF document text
    • https://s3.amazonaws.com/potofaw/what_do_google_local_guide_points_do.pdfIn PDF document text
    • https://s3.amazonaws.com/jenisozazewubo/44272538224.pdfIn PDF document text
    • https://s3.amazonaws.com/jodabiladezot/70250874576.pdfIn PDF document text
    • https://s3.amazonaws.com/fizaxo/apa_manual_7th_edition_isbn.pdfIn PDF document text
    • https://s3.amazonaws.com/bidemewufa/orotic_aciduria_treatment_guidelines.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_off0000f465.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF465 3916 bytes
SHA-256: ada14382bbf1c6ac9878d087798332ef2f348f1bc1f3be7bc433ac6a46c19b27
font_01_sfnt_off0001022f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1022F 5444 bytes
SHA-256: 2a3bd5f76fb92aee543dcb5186d4a7a68a59fa0bb2c4671131a76de27a634fa6
font_02_sfnt_off0001148f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1148F 10308 bytes
SHA-256: 7c0f94281db917777b8dd90f13c3fbef3cc3fb330b720b41ac5ef140490fcc38

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