Malicious PDF — malware analysis report

Static analysis result for SHA-256 099f21de902c5b73…

MALICIOUS

PDF

60.0 KB Created: 2020-11-21 19:11:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: d63d12916bbfcf5f18a15f0872a5be14 SHA-1: d794693ce625445592d705c85b9cbea8c58a3085 SHA-256: 099f21de902c5b73a0b6e97eca62c9075cbd23acaa81e6061af340743430d836
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://trafffe.ru/123?utm_term=caron+simply+soft+party+yarn+platinum+sparkle PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4371013/normal_5f91f3e69dd9a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4484605/normal_5fb8c06e44780.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414682/normal_5fb2f53b793e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378855/normal_5f9884d41af1d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366388/normal_5f88b91e2aab1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424025/normal_5fa036c84079b.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/wewuxuviwar/manual_autocad_3d_2018_espaol.pdfIn PDF document text
    • https://s3.amazonaws.com/ditiruz/checkers_eezicoupons_app.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cbb77b4a-3741-41fc-901b-833c3f6ffd3e/2963414378.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9b1a1d17-7717-42a1-bf94-289192770ddd/37809304792.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/adobe_cs6_master_collection_keygen_download.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/ge_dryer_fuse_location.pdfIn PDF document text
    • https://s3.amazonaws.com/jirebonudur/jefferson_kyschools_us_email.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/b._ed_books_aiou.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_off0000ae4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAE4A 5120 bytes
SHA-256: 7744eca94bec4c9c8a37db9a44d50aea236622d9e47d9bbf475f136ca6ed6251
font_01_sfnt_off0000bfa9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBFA9 10564 bytes
SHA-256: 54bc5abf6803296a28815d9fd7dacaa71ee75bdca4b4680b0aa6f5eb61013a89