Malicious PDF — malware analysis report

Static analysis result for SHA-256 7842457863187864…

MALICIOUS

PDF

73.1 KB Created: 2021-03-27 22:05:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 5a74d013928da0cecd2bbcaea643b57b SHA-1: 1f32ce1343a13f1cf481a416538e3e672a4d236e SHA-256: 7842457863187864f9e9b8228c07533ae08b41f59c7782003169a81030e8d38e
96 Risk Score

Malware Insights

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

This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. The embedded URL `https://kuzutuzo.ru/award?keyword=after+you+ve+gone+ukulele+pdf` suggests a phishing lure related to ukulele music, aiming to trick the user into clicking the link. No scripts were extracted, but the PDF structure and external URL indicate a likely phishing attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://kuzutuzo.ru/award?keyword=after+you+ve+gone+ukulele+pdf
    • https://cdn.sqhk.co/pirujezexod/hcjjUhj/life_is_strange_comic_issue_13_free.pdf
    • http://kagaromorin.medianewsonline.com/50325259282.pdf
    • https://romuxejis.weebly.com/uploads/1/3/4/8/134887308/e12513e9c7e78.pdf
    • https://cdn.sqhk.co/sevigexew/cihjuhc/mizaxewekibonigeze.pdf
    • https://cdn.sqhk.co/jaxaletadi/iiajdbw/neighbors_of_code_enforcement.pdf
    • http://digovin.getenjoyment.net/rolokowaxumogusez.pdf
    • https://dufubixapitosig.weebly.com/uploads/1/3/4/5/134503348/vosofamuluwitirilixi.pdf
    • https://cdn.sqhk.co/difakezil/ibEjhXe/rinog.pdf
    • http://narovomesizi.medianewsonline.com/angulos_inscritos_en_una_circunferencia.pdf
    • http://pawusewi.sportsontheweb.net/ciclos_circadianos_en_plantas.pdf
    • http://gamuxiwami.getenjoyment.net/45406895506.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://www.daltonmaag.com/
    • https://s3.amazonaws.com/nopomewegobij/actualisation_pole_emploi_formation_afpa.pdf
    • https://uploads.strikinglycdn.com/files/f1b2536d-7189-41f6-bed3-ee3e220c1ca1/pijozerefitewi.pdf
    • https://uploads.strikinglycdn.com/files/dd9f775d-689a-4099-83ac-dcd0b75e2311/personalised_tale_of_peter_rabbit_book.pdf
    • https://uploads.strikinglycdn.com/files/402c0139-22a8-4ba0-af19-04da2c29d760/acordes_jesus_mi_fiel_amigo_ukelele.pdf
    • https://s3.amazonaws.com/tirimofufemukat/phenol_formaldehyde_resin_chemistry.pdf
    • http://pikaderobiw.atwebpages.com/85817862829.pdf
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/pdf/1.3/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/rights/
    • http://scripts.sil.org/OFL

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000d299.bin
45433a77a3c4ec518813713567f2364949dd3f0809e3e968cd81147d088208d0
pdf-font-stream PDF embedded font (sfnt) at offset 0xD299 4868 bytes
font_01_sfnt_off0000e351.bin
1ca2ab1a666c0adb5df2606b0091f528c24051c6a1fd9a9ad663abc21959d0a6
pdf-font-stream PDF embedded font (sfnt) at offset 0xE351 11172 bytes
font_02_sfnt_off00010964.bin
1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361
pdf-font-stream PDF embedded font (sfnt) at offset 0x10964 4324 bytes