Malicious PDF — malware analysis report

Static analysis result for SHA-256 d9bd1f32ef19dbc9…

MALICIOUS

PDF

67.1 KB Created: 2020-12-19 23:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: fddb6893ce79f10bb6ab03a0accb788d SHA-1: 59f8ea3292adc9886ee8415333078515760ffd5a SHA-256: d9bd1f32ef19dbc9fc7a61a8fb8a7495bd53074616fac1ad8ae7605c7f145f74
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 0.9998

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://trafffi.ru/strik?utm_term=teacup+chihuahuas+for+sale+in+el+paso+tx PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4456705/normal_5fb2ee741371f.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbcfa6464a3cc4058a46ef7/1606220388586/modern_combat_3_1.1.7g_apk_data_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0bcfb2e537a05ef083615/t/5fc6adcee18c5c478ee7d095/1606856143779/the_big_farm_theory_money.pdfIn PDF document text
    • https://s3.amazonaws.com/jofunozuzof/relationship_between_social_science_and_applied_social_science.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c636e4ca-54e0-48c0-9f04-22c15a1aa9b4/demisijujukurufumamefapub.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/low_back_pain_icd_10_dx.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/kutizadi.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5406c7d0c8f249d5d8b91/t/5fc7a9d33d56556d14455547/1606920660569/minecraft_space_survival_modpack.pdfIn PDF document text
    • https://s3.amazonaws.com/nitirew/61558014968.pdfIn PDF document text
    • https://s3.amazonaws.com/pusixa/pneumonia_neonatal_adalah.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc67957ec917750a3fde254/t/5fd6237b0f11661d4c240a02/1607869308231/zibatimopajaxu.pdfIn PDF document text
    • https://s3.amazonaws.com/mikibetiv/dizuxogisafoxoj.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_off0000c83a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC83A 5120 bytes
SHA-256: ba6702ab370eea7682b8e4e2602b047e6c26cb77966f5e22a0ea2bd6428f4a56
font_01_sfnt_off0000d9a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD9A3 11196 bytes
SHA-256: 02c0c578f40ab1001cdb36a036baba504e5422ab0974f233eaab3298312b629a