Malicious PDF — malware analysis report

Static analysis result for SHA-256 5acacb0a45a0b7c5…

MALICIOUS

PDF

81.7 KB Created: 2021-03-09 09:13:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7)
MD5: a5d4e874c3c284f85299a68f1cb82f75 SHA-1: 5ffcb78846a8e2e75a4b1b34edafbdea8b0d9078 SHA-256: 5acacb0a45a0b7c59a53f05e11557ab7fbfdb8393321e5f25e3feeaf6960dd7f
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, with a high risk score. It contains an embedded URI pointing to 'botokaw.ru', suggesting a phishing or malware distribution attempt. The document body, though heavily obfuscated, contains text related to games and wkhtmltopdf, indicating a potential lure to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=command+and+conquer+like+games+for+android
    • http://tiwujatujoput.mygamesonline.org/taller_busqueda_de_empleo.pdf
    • https://sejumajofejopib.weebly.com/uploads/1/3/2/7/132740214/sujaf_pudurivo.pdf
    • https://bujajegufo.weebly.com/uploads/1/3/4/1/134108800/revajifolafiser_pefimane_dusunakiru.pdf
    • https://cdn.sqhk.co/giwitosak/hfhaiir/pokemon_quest_vinyl_figures_series_2.pdf
    • http://fopokigife.mywebcommunity.org/brother_mfc_490cw_printer.pdf
    • http://serikanipesemo.iblogger.org/skillbuilder_practice_distinguishing_fact_from_opinion_answers.pdf
    • https://cdn.sqhk.co/mofekuma/iijdZlR/samsara_game_meaning.pdf
    • http://nemugub.mywebcommunity.org/75448637460.pdf
    • http://www.ascendercorp.com/
    • http://www.ascendercorp.com/typedesigners.html
    • https://s3.amazonaws.com/zibenoroduzuw/21707034951.pdf
    • https://s3.amazonaws.com/potamotaz/chortau_mirror_dash_cam_manual.pdf
    • https://s3.amazonaws.com/tumuzu/zexapagapibuwez.pdf
    • http://rukosivujuxu.atwebpages.com/epson_stylus_photo_1400_ink_pad_reset_utility.pdf
    • https://s3.amazonaws.com/panalipolifod/guidelines_for_secondary_containment_alberta.pdf
    • https://s3.amazonaws.com/juvetaso/capitalization_of_proper_nouns_worksheet.pdf
    • http://komivarutu.epizy.com/tikafurekudavev.pdf
    • http://matixonapoler.epizy.com/65460773044.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_off000103ab.bin
0769d9c66b241f9060f4ba97b5ff469bad1f5c5bb5197243ff50a3d8847f5767		 pdf-font-stream PDF embedded font (sfnt) at offset 0x103AB 5436 bytes
font_01_sfnt_off00011609.bin
959a3c0d2cd3e882767a137b9c6daff9230c434019bd7368356b4c0935b2bf5b		 pdf-font-stream PDF embedded font (sfnt) at offset 0x11609 10476 bytes

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