Malicious PDF — malware analysis report

Static analysis result for SHA-256 ebabf57a52fa8d04…

MALICIOUS

PDF

77.9 KB Created: 2021-04-04 08:51:36 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 59e0624752bddf03a8d798305adc9a8d SHA-1: 71c8833154645a149d8c074b00bd6dd2e9c48466 SHA-256: ebabf57a52fa8d041b8d7aebbece6ba729adcb8509fdd59bbc68c0dd20ab953b
96 Risk Score

Malware Insights

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

The file is identified as malicious by ML classifiers and ClamAV, specifically flagged as a phishing trojan. It contains multiple embedded URLs, one of which, 'https://jumiwimov.ru/strik?utm_term=gaggia+milano+brera+review', is directly associated with the PDF's content and likely serves as the primary lure. The presence of embedded URLs suggests an attempt to redirect the user to a malicious site, which is a common tactic for phishing or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://jumiwimov.ru/strik?utm_term=gaggia+milano+brera+review
    • http://jedetifujupeg.iblogger.org/aiken_drum_lyrics.pdf
    • https://fuxiwuzepideka.weebly.com/uploads/1/3/1/3/131381491/gerurumugesuzu_dupetik_malunogifobajo.pdf
    • https://remofixar.weebly.com/uploads/1/3/0/7/130776049/b18366d5f.pdf
    • https://cdn.sqhk.co/jasurisunav/aa0OQ70/kotebilugotozir.pdf
    • http://gakivako.iblogger.org/perimeter_of_common_shapes_worksheets_3rd_grade.pdf
    • https://cdn.sqhk.co/rijizedot/fuia3hb/download_mod_apk.pdf
    • https://bakijowo.weebly.com/uploads/1/3/4/7/134726649/bokejewajal-wevubinivekumol-zemado.pdf
    • https://sepijoverik.weebly.com/uploads/1/3/4/3/134317252/b6498dec433f53.pdf
    • http://dunijekunabov.22web.org/4645420987.pdf
    • https://cdn.sqhk.co/fosojatesog/ieijhhc/amusement_parks_in_california.pdf
    • https://ziropiwos.weebly.com/uploads/1/3/4/3/134311351/5790508.pdf
    • https://cdn.sqhk.co/jeporikate/8ZicXbe/asphalt_nitro_8_java_game.pdf
    • https://cdn.sqhk.co/bemaxopig/jhcqIji/dalukilijaxajubut.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mukutud/what_is_the_role_of_judge_in_criminal_justice_system.pdf
    • https://uploads.strikinglycdn.com/files/098d3dc8-f26f-4735-9c8e-d43f20bc90ab/online_criminal_law_courses_canada.pdf
    • https://s3.amazonaws.com/jodabiladezot/wizebafesijufamibi.pdf
    • http://reditab.epizy.com/arboles_de_decision_en_r.pdf
    • http://mujozitovisiwud.rf.gd/23130488430.pdf
    • https://uploads.strikinglycdn.com/files/fd61ced4-21d4-4e2c-93fe-be6bdc1c4dd4/serial_key_counter_strike_1.6_no_steam.pdf
    • https://uploads.strikinglycdn.com/files/838590e3-c2d7-49ec-8a86-8eb2afa1c8ec/87852572489.pdf
    • https://uploads.strikinglycdn.com/files/73423a0a-374f-4cf1-8b89-f952c61ed693/mijagexobazi.pdf
    • http://fulisawuxulinis.rf.gd/superintendent_job_description_template.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_off0000f37c.bin
7266fdfe6c5bab74f3fa1a131642245a09148263bc057334e4ccf0e272bbaf02		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF37C 5152 bytes
font_01_sfnt_off00010505.bin
7b3d4e1f72719351b41dc1e32310c16afb6577db79916b89b3fffac6d4f013a1		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10505 10756 bytes

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