Malicious PDF — malware analysis report

Static analysis result for SHA-256 37246e97a3d99616…

MALICIOUS

PDF

83.2 KB Created: 2020-12-13 16:57:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3b8f9961d4af5aa95e8dc3ef4202e73c SHA-1: 3f6bfd3ecad10bb6fa8f5ebaba2243e573a2f750 SHA-256: 37246e97a3d99616ae63bf5c249aed43248c625a94d250677e3f8e75965ed51e
96 Risk Score

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 0.9997

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://trafftec.ru/strik?utm_term=adh+released+from+pituitary+gland PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375507/normal_5fbbcd5ade7fb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454803/normal_5fa8779f51be0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427295/normal_5fd07054d854c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/55be0d56-88b8-4b7d-b87b-f07b9edcf6c5/78032292034.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/user_guide_codeigniter_bahasa_indonesia_zip.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd095c1af5bf52c328c8e3/1606224220642/vegas_pro_13_serial_number.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e552ec917750a3d7e003/t/5fc52eae9d79364840350669/1606758063263/asian_black_chicken_egg_color.pdfIn PDF document text
    • https://s3.amazonaws.com/midipes/forgiveness_embrace_sheet_music.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc3b7d50a2757459bf48cbe/t/5fc5c33b61e25426e1ffa022/1606796092389/canton_middle_school_my_perfect_landing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/45d1ee04-748b-4cf4-8c23-71e7c47510c7/paypal_money_adder_download_exe.pdfIn PDF document text
    • https://s3.amazonaws.com/fibesezati/8596662739.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc147a892c50b1a1e7a1756/t/5fccef3f662d5e24e0a3089d/1607266112310/star_wars_galaxy_of_heroes_characters_wiki.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbd1a731d5d775a7853633f/1606228595846/drastic_paid_apk_no_root.pdfIn PDF document text
    • https://s3.amazonaws.com/nijosinizo/77899895382.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000faff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFAFF 5428 bytes
SHA-256: 8e44221828b4a955ba943c84821bd4dec4e955427398030faa54c5b2f35054af
font_01_sfnt_off00010d5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10D5A 10696 bytes
SHA-256: 700a3f5d8b38c55e1b93bea51a8420be7cecd8c25b95ab6d659b35473f3037d6
font_02_sfnt_off000131d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x131D5 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333