Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff24830cabe4a629…

MALICIOUS

PDF

86.7 KB Created: 2021-04-04 16:13:48 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: 32b590fc38e0692aec30affb4d7334f2 SHA-1: 1350a7900281b422bbbbc292c7ca37199e99f92f SHA-256: ff24830cabe4a629f52fc30b0aacb012c3c07e6841b5a3b49d7ec40ab36cd2c4
96 Risk Score

Malware Insights

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

The PDF document contains an embedded URI pointing to a suspicious domain, identified as malicious by ML classifiers and ClamAV. The document body, though heavily obfuscated, suggests a lure related to learning religious texts, which is a common tactic for phishing or malware distribution. The presence of multiple unknown and potentially malicious URLs further supports this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9951

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://botokaw.ru/aws?utm_term=how+to+learn+vishnu+sahasranamam+in+english
    • http://titoto.xyz/348916955258fk5e.pdf
    • http://gubixazolela.sportsontheweb.net/resumen_de_la_culpa_es_de_la_vaca_2_por_capitulos.pdf
    • http://italywow.info/adobe_premiere_pro_5.5_free_download_for_pcxjp09.pdf
    • https://zelelifejoba.weebly.com/uploads/1/3/4/3/134321633/2009884.pdf
    • https://tiwoboromezusud.weebly.com/uploads/1/3/0/8/130874009/badaj.pdf
    • http://magnitoli-2ekran.site/newblue_transitions_3_ultimate_crackceec2.pdf
    • http://fulokixowo.scienceontheweb.net/fimawagizadusuwugukurasir.pdf
    • http://rolopigabetitu.scienceontheweb.net/runaxadolonutibez.pdf
    • https://peminikagi.weebly.com/uploads/1/3/1/8/131856713/6983828.pdf
    • http://ig-verifiedsbadge.com/gedabapuvidipefoxejx50me.pdf
    • http://sayseedokg.com/discussion_board_posting_guidelines95xy2.pdf
    • https://zegokovoni.weebly.com/uploads/1/3/4/3/134323662/7684796.pdf
    • http://agreevudb.rest/vajuremetejabululojizoxaw4pi0.pdf
    • http://neletaparufo.scienceontheweb.net/dozijonuwa.pdf
    • http://badge-verification-center.com/golf_r_service_schedule_uk2rk55.pdf
    • http://merovew.xyz/is_disneyland_in_california_open_nowdl951.pdf
    • http://usersdeviceprotectionservice.site/73667101829inevy.pdf
    • http://meetdouche.xyz/as_per_noam_chomskys_theory_the_role_of_language_acquisition_device_is_to0b8lt.pdf
    • http://nujagexurej.medianewsonline.com/71407059869.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/pezofut/why_does_my_roomba_not_hold_a_charge.pdf
    • https://s3.amazonaws.com/mejados/13364733361.pdf
    • http://zogoxuf.atwebpages.com/75829198157.pdf
    • https://s3.amazonaws.com/garorowa/36019158013.pdf
    • https://s3.amazonaws.com/fedure/black_and_white_pictures_for_babies.pdf
    • http://pulitisagot.atwebpages.com/probability_questions_and_answers_free_download.pdf
    • https://s3.amazonaws.com/redegelesibif/what_type_of_crime_is_inchoate.pdf
    • http://penobugixova.atwebpages.com/xeregovovevotejixu.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
    • http://dejavu.sourceforge.net
    • http://dejavu.sourceforge.net/wiki/index.php/License

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000fde0.bin
551f68765a4673d2ffb4a3221902c9c327f40f94c58a5e8f48f6bd7db84f5288		 pdf-font-stream PDF embedded font (sfnt) at offset 0xFDE0 5212 bytes
font_01_sfnt_off00010f84.bin
719c063a501ef3e40ccdb188263d986e22baf1f7078eced20cba9edbe71f8bab		 pdf-font-stream PDF embedded font (sfnt) at offset 0x10F84 11032 bytes
font_02_sfnt_off00013574.bin
a95eff378c135b1ab40d10b3cd1da1bafbc07f86005f57898d079c90d712ddbd		 pdf-font-stream PDF embedded font (sfnt) at offset 0x13574 16204 bytes

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