Malicious PDF — malware analysis report

Static analysis result for SHA-256 dba36e839538ecf5…

MALICIOUS

PDF

71.5 KB Created: 2021-03-22 11:03:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-07-02
MD5: cc44f90086839c835f6b63c49fb70910 SHA-1: 0d5dc3a544219fa94e50bf36bde406c9ed6596d8 SHA-256: dba36e839538ecf571b72e3609e8d25a3ece67603f76027cac91787e21bde82f
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URI pointing to a URL that mimics a search query, likely intended to deceive the user into clicking it. While no scripts were directly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious site for further exploitation.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://resalured.ru/wix?keyword=declaration+of+independence+graphic+organizer+answers PDF link annotation
    • http://rolevuses.iblogger.org/kojoloj.pdfIn PDF document text
    • http://medebux.22web.org/remote_access_software_free_for_pc.pdfIn PDF document text
    • https://cdn.sqhk.co/kopilixa/jjvlkIH/begegumopuzofigizas.pdfIn PDF document text
    • http://mareson.getenjoyment.net/historia_de_la_tabla_periodica_delos_elementos_quimicos.pdfIn PDF document text
    • https://cdn.sqhk.co/mujowofapubi/iBNHhEG/steven_universe_future_quizzes.pdfIn PDF document text
    • https://cdn.sqhk.co/rifarako/hewjiiu/julio_iglesias_my_life_the_greatest_hits_cd.pdfIn PDF document text
    • http://yachts-4-sale.com/hitachi_12_compound_sliding_mitre_saw_c12rsh23m0t5.pdfIn PDF document text
    • http://montana-media.com/95605101801v2vbf.pdfIn PDF document text
    • http://piwulag.sportsontheweb.net/zenimibipemalevijeku.pdfIn PDF document text
    • https://cdn.sqhk.co/nezotelo/atgd7gf/the_chosen_one_movie_2015.pdfIn PDF document text
    • http://lofomerevudawem.iblogger.org/autocad_2013_3d_tutorial_free.pdfIn PDF document text
    • https://cdn.sqhk.co/vopunokapire/r0miihj/jenis_font_iphone_11_pro_max.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/vuliwisuwig/kabag.pdfIn PDF document text
    • https://s3.amazonaws.com/voxulija/how_to_read_1_16_scale_ruler.pdfIn PDF document text
    • https://s3.amazonaws.com/furunumaroxun/the_green_mile_movie_director.pdfIn PDF document text
    • http://fufudaloxola.onlinewebshop.net/61273633227.pdfIn PDF document text
    • https://s3.amazonaws.com/bisute/evaluate_each_infinite_geometric_series_described_worksheet.pdfIn PDF document text
    • http://fupuzujovo.epizy.com/cheetah_film_all_song.pdfIn PDF document text
    • https://s3.amazonaws.com/lawakux/manovorupev.pdfIn PDF document text
    • http://pawepeg.atwebpages.com/12279119323.pdfIn PDF document text
    • http://zifezerolivuba.epizy.com/70142322047.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_off0000da01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDA01 5560 bytes
SHA-256: dafbf2ce5a35733d67717e0de4c31c9c7d4d21088d5be8a0b7f1c0b58f72ce55
font_01_sfnt_off0000ed11.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xED11 10356 bytes
SHA-256: 42cecfb1cfdd66bdd25e02c08c769ed5bc92edbc0fc1ac02ca25119830eb2656

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