Malicious PDF — malware analysis report

Static analysis result for SHA-256 b0fda7d784f7eee3…

MALICIOUS

PDF

96.4 KB Created: 2020-11-16 17:50:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 850e90eb76d6445e71f644c7e33bd019 SHA-1: d5b759c4dc60b8b9400a9bcfe268e987fc5bafd4 SHA-256: b0fda7d784f7eee3e82eb093b07f127fed5793e446ad0b216815ac5415fee860
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

This PDF document was flagged as malicious by ClamAV and an ML classifier. The file embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

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://traffine.ru/strik?utm_term=viscosit%25C3%25A9+dynamique+de+l+eau PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4443821/normal_5fa7538609681.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/tizowodifi/primary_producers_in_the_african_savanna.pdfIn PDF document text
    • https://s3.amazonaws.com/tumasun/bovoxap.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/30810645849.pdfIn PDF document text
    • https://s3.amazonaws.com/bovenotojitowe/mofofeb.pdfIn PDF document text
    • https://s3.amazonaws.com/fezenur/play_games_online_free.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/beery_vmi_manual_6th_edition.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/paypal_direct_deposit_failure_code.pdfIn PDF document text
    • https://s3.amazonaws.com/fuwawibu/que_es_antigeno_y_anticuerpo.pdfIn PDF document text
    • https://s3.amazonaws.com/tokafanawa/hank_williams_lost_highway_meaning.pdfIn PDF document text
    • https://s3.amazonaws.com/pisik/lace_edged_bed_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jazuravazaguz/minecraft_sweet_and_awesome_download.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagoba/whatsapp_symbols_meaning_in_telugu.pdfIn PDF document text
    • https://s3.amazonaws.com/wesezuzuvalirik/76102538816.pdfIn PDF document text
    • https://s3.amazonaws.com/jidosatikim/39468815110.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
    • https://savannah.gnu.org/projects/freefont/In PDF document text
    • http://www.gnu.org/licenses/In PDF document text
    • http://www.gnu.org/copyleft/gpl.htmlIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010350.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10350 5324 bytes
SHA-256: dab642bdfc97dcbd31051057f4fc49a5eeeb63dd9295496c0dc3f2263fe3f71d
font_01_sfnt_off000114dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114DC 6300 bytes
SHA-256: fba9f6d5d467b7d6bbccdc8ac95b73ea8a6825a62cfb156e50cd914bb525142d
font_02_sfnt_off00012435.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12435 18492 bytes
SHA-256: 98d5fc8061b61df7c5f0d381d372228754b3e5fdfb4af799ef2dbe2a1ecf7df4
font_03_sfnt_off00015c12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15C12 16216 bytes
SHA-256: 5ab714b7b3088a14d16165ee5369a7b5c0da3fd46592e7da44b6738c3dcfe930

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