Malicious PDF — malware analysis report

Static analysis result for SHA-256 e87080f8854e498e…

MALICIOUS

PDF

116.3 KB Created: 2021-03-19 10:15:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 1eee6ea6f1d321530655ad38bd3702f4 SHA-1: 76c56f99551593b5f85923d53991b48ed6cce29c SHA-256: e87080f8854e498ecb40f22846ee5566ac729b6388e61b7dc3d46d9f59299b77
96 Risk Score

Malware Insights

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

This PDF file was flagged as malicious by ML classifiers and ClamAV, indicating a high likelihood of malicious intent. It contains an external URI pointing to 'https://seumenha.ru/award?keyword=envisioning+information+pdf', suggesting a phishing or malware distribution lure. The document body is heavily obfuscated and appears to be generated by wkhtmltopdf, which is not typical for legitimate documents, further supporting the malicious classification.

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://seumenha.ru/award?keyword=envisioning+information+pdf
    • https://cdn.sqhk.co/zogowefu/gPOqhgT/67266104187.pdf
    • http://digitaltoolsfor.xyz/50148967938kegvn.pdf
    • http://qupieasy.online/cual_es_la_fruta_q_menos_engorda1pv3n.pdf
    • http://datekal.22web.org/report_burst_water_pipe_durban.pdf
    • https://cdn.sqhk.co/zexukobesu/Y9Zdgho/ice_hockey_premier_league_table.pdf
    • http://hardcreditcheck.info/toshiba_50l3400u_screen_flashingsd4jt.pdf
    • http://hidver.com/what_are_the_eight_major_constituents_in_seawaterh30e2.pdf
    • http://bolowaxo.22web.org/dopuwawinov.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • http://voxarenilime.epizy.com/how_to_prime_zero_pod.pdf
    • https://425e2ee7-996f-4c6d-a593-b44a2a39b733.filesusr.com/ugd/bb05c1_d547e220669049758e6b7ebdf5e317b5.pdf?index=true
    • https://uploads.strikinglycdn.com/files/63cca149-fc5b-4ef7-8990-6d838a4f2a37/from_the_mixed-up_files_of_mrs._basil_e._frankweiler_film.pdf
    • http://wipidomi.rf.gd/hard_animal_word_search.pdf
    • https://856cb5e6-6c81-45ce-9604-b57907a15cd2.filesusr.com/ugd/cc3ca9_7a57de4a39594272a0cd69812c1aff80.pdf?index=true
    • http://vipowiso.epizy.com/68763187320.pdf
    • http://pesuvomekujidi.rf.gd/printing_and_branding_company_profile.pdf
    • http://nadezuj.epizy.com/30512986196.pdf
    • http://doroxepazu.epizy.com/3687609949.pdf
    • https://uploads.strikinglycdn.com/files/24a9772d-9ab5-4971-a625-77ac240b0367/what_are_the_responsibilities_of_a_general_contractor.pdf
    • http://najabofumason.epizy.com/34347038790.pdf
    • https://uploads.strikinglycdn.com/files/6d5a3601-33ec-43a5-a9ad-cef923dd0363/grounded_theory_analytical_method.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00018825.bin
866f1cefb21f8a05f207bb414de2cca3a355dfee63480f098c0c689608e5efed
pdf-font-stream PDF embedded font (sfnt) at offset 0x18825 5344 bytes
font_01_sfnt_off00019a4b.bin
e686f7826c8ac1a425c640859f523fe57383aa56fd4bbacc7dc2e67fd0f89e75
pdf-font-stream PDF embedded font (sfnt) at offset 0x19A4B 13296 bytes