Malicious PDF — malware analysis report

Static analysis result for SHA-256 bb20dad157914b78…

MALICIOUS

PDF

73.5 KB Created: 2021-04-03 14:51:01 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 0bd68e976430b16f65e936ca7d05c683 SHA-1: ad68229cae3c3a12ab6106d2b96dd6def379ea09 SHA-256: bb20dad157914b78e09d811e2563738ea475183eb06b86827542ebb63cbfb3f6
96 Risk Score

Malware Insights

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

The PDF file contains an embedded URL that redirects to a domain commonly associated with phishing or malware distribution. The ML classifier and ClamAV detection strongly indicate malicious intent. The document body, though heavily obfuscated, appears to be a lure related to a search query, aiming to trick the user into visiting the malicious URL.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://seumenha.ru/award?keyword=blood+cells+and+their+functions+pdf
    • https://cdn.sqhk.co/bamosabubesi/gihhbgc/47510950718.pdf
    • https://cdn.sqhk.co/texirisawoz/dZFxGgf/raju_bhai_movie_video_songs_free.pdf
    • https://cdn.sqhk.co/letarezetap/yziikgg/lutejufe.pdf
    • http://kajejib.medianewsonline.com/detailed_lesson_plan_in_math_grade_2.pdf
    • http://radapox.iblogger.org/gewofexatawi.pdf
    • http://xatovapotogu.mywebcommunity.org/biblical_theology_study_bible.pdf
    • https://cdn.sqhk.co/feledigowud/gzhjkih/pigtronix_infinity_2_looper_pedal.pdf
    • http://kutakelipaxeb.22web.org/41962106205.pdf
    • http://fasuderimevaj.22web.org/dojep.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/mixanaz/tofenuvobutubitogiwur.pdf
    • http://xewaxal.epizy.com/57249306362.pdf
    • https://s3.amazonaws.com/muvevanepen/comparison_and_contrast_essay_about_cat_and_dog.pdf
    • http://bomapogixojepo.epizy.com/xisunonefexadatawa.pdf
    • https://s3.amazonaws.com/zusevamasor/advaita_vedanta_download.pdf
    • http://mezajuwobit.rf.gd/vpn_master_apk_pro.pdf
    • http://rejosunugewojif.epizy.com/marcus_derrickson_scouting_report.pdf
    • https://s3.amazonaws.com/jiwotarotavuz/cps_report_online_ny.pdf
    • https://s3.amazonaws.com/negonanopix/amplifier_audio_song_free.pdf
    • http://lesidiwajenowil.myartsonline.com/transistor_audio_amplifier_circuit_diagram.pdf
    • https://s3.amazonaws.com/wazotojemov/baker_encyclopedia_of_christian_apologetics.pdf
    • https://s3.amazonaws.com/bulujono/36446160249.pdf
    • http://romuwoturifitam.epizy.com/bepirokamilejebixogib.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_off0000e338.bin
ef8d6aa372510ca1acca3fe07c50eeb6724895160a828eda615fb86c6c86d961		 pdf-font-stream PDF embedded font (sfnt) at offset 0xE338 5292 bytes
font_01_sfnt_off0000f533.bin
00a50dec0c7cddbdbcf41c95513010c79fa7bc20b8258f6017ffc44a63ce8c85		 pdf-font-stream PDF embedded font (sfnt) at offset 0xF533 10360 bytes

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