Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a477ac1954458f9…

MALICIOUS

PDF

75.6 KB Created: 2021-03-05 12:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-06-13
MD5: 6c2dc1e61308684ed4bf986a759b3835 SHA-1: e93fd5b08c86bf3806bc60a2534494596cfc7c5f SHA-256: 4a477ac1954458f9ddfc11b79de21d81fcb135c4ce65d51fb99f6139d1473ccf
96 Risk Score

Malware Insights

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

The file is a PDF document flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains an embedded URI pointing to 'botokaw.ru', which is likely intended to redirect the user to a malicious site. The document body, though heavily obfuscated, contains text related to 'first person shooting games unblocked', suggesting a lure to attract users to the malicious URL.

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://botokaw.ru/wix?keyword=first+person+shooting+games+unblocked PDF link annotation
    • http://vumajufeboxidik.mywebcommunity.org/rimogetogugodufevosi.pdfIn PDF document text
    • http://fisareboveda.getenjoyment.net/wahl_professional_cordless_magic_clip_metal_edition.pdfIn PDF document text
    • http://xuvaguwanolinu.66ghz.com/malaguena_ernesto_lecuona_piano_sheet_music.pdfIn PDF document text
    • http://xojuxelase.medianewsonline.com/crochet_virus_shawl_pattern_uk.pdfIn PDF document text
    • http://wowezixuxaxu.22web.org/livro_de_cabala.pdfIn PDF document text
    • http://zobotalemogi.sportsontheweb.net/organisms_in_an_ecosystem_compete_only_for_food.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://xuxevimikari.rf.gd/64333978359.pdfIn PDF document text
    • https://s3.amazonaws.com/pasawe/case_in_point_10_complete_case_interview_preparation.pdfIn PDF document text
    • https://s3.amazonaws.com/sepovutapakogaf/how_do_i_use_apple_books_on_my_pc.pdfIn PDF document text
    • http://fobugasa.rf.gd/fumezogigof.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/self_guided_motorcycle_tours_spain.pdfIn PDF document text
    • http://muferipimakolop.rf.gd/rv_refrigerator_troubleshooting_guide.pdfIn PDF document text
    • http://dufobirufo.atwebpages.com/odyssey_text_robert_fitzgerald.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/eef1e9e2-40cf-482a-a842-23d5e1f8ee57/delonghi_ceramic_tower_heater_aldi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d10c0de0-0256-4ed0-8a43-f10b69275e67/yaesu_ft_450_manual_deutsch.pdfIn PDF document text
    • https://s3.amazonaws.com/nagudo/rakiv.pdfIn PDF document text
    • https://s3.amazonaws.com/netinuwa/20866682171.pdfIn PDF document text
    • http://giwofigu.epizy.com/kundli_pro_software_free_with_crack.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8608b3ab-767a-483e-838e-286f89ed9abc/why_wont_my_galaxy_note_5_turn_on.pdfIn PDF document text
    • https://s3.amazonaws.com/piwupevivotixi/98074107143.pdfIn PDF document text
    • https://s3.amazonaws.com/medaliwifufugel/hermes_birkin_color_guide.pdfIn PDF document text
    • http://gomaxum.rf.gd/18481269350.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_off0000e9d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE9D5 5648 bytes
SHA-256: b6cd69383804c72fb77bbc24c20b210f298b17e52aa088ff1b04c7d7f1db9599
font_01_sfnt_off0000fcda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFCDA 10368 bytes
SHA-256: 42dcbed99905c41e894fc30f21c0329ae2cc194199a65aa953be43df681c1772

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