Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd19ad0a7c6a3650…

MALICIOUS

PDF

59.6 KB Created: 2020-12-21 00:52:06 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3f8f31b327a0c7158369ce2045b3531c SHA-1: 2ca45848888d11f3eb80a68143a209a4aa1418e6 SHA-256: cd19ad0a7c6a36505912430ba9cb93b58d1b8e049546bbf0a0688e7923b9c36c
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 0.9996

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://traffine.ru/123?utm_term=australian+army+writing+manual PDF link annotation
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/0393f4c8-0ae1-45fb-b2e6-2cbcdb4b23cf/strict_nat_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cb254485-cae6-4cff-b8f1-bc6f52155528/mamiya_rb67_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/migivewuwe/michelin_guide_2020_washington_dc.pdfIn PDF document text
    • https://s3.amazonaws.com/tosasugokod/69454390813.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/sesorewurasiwuj.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbf634b3570fb44d1fa9c4a/1606378327869/guviwagubalerul.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc593df27a199023ad5232a/t/5fcef62a7379aa35976c76ce/1607398955647/kefuzirigirukutovilupam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7fefd3f3-5766-41e6-8672-6b4de1fad417/40016931715.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5f263921-a4d7-4e3a-afa3-bf2a5e8d47d6/true_living_organics_the_rev_free.pdfIn PDF document text
    • https://s3.amazonaws.com/fosagobomap/arrested_development_pilot_summary.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b617569e-5eee-41e8-9729-0a72d9b0956c/ratusanilanasazi.pdfIn PDF document text
    • https://s3.amazonaws.com/gupawupigawono/cat_game_java.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/jitubamo.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_off0000ae85.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE85 5188 bytes
SHA-256: 57b0eca911916ec33180453fcf6b86cf87b9c43e7388d884a51dba509015526e
font_01_sfnt_off0000c02d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC02D 9856 bytes
SHA-256: 46dbe451446d152e1ee434207c5ae8f2c3d384db594cff617b171c64f80d42c7