Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5c05708e8963ce0…

MALICIOUS

PDF

37.2 KB Created: 2020-11-04 20:05:15 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 99592fb4e28615ce70b4e6d7fa258fc1 SHA-1: df84482af75f910d018f74a047d6cf063d34c1e7 SHA-256: d5c05708e8963ce0d3a82d950dc97a25d7e5f23f136d5289dc48fa8094d6fad8
94 Risk Score

Malware Insights

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

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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://ttraff.cc/123?keyword=lightroom+apk+premium In PDF document text
    • https://fofaxofik.weebly.com/uploads/1/3/4/5/134521529/9e748ef.pdfIn PDF document text
    • https://mimasalidapu.weebly.com/uploads/1/3/4/4/134466186/b6ebf.pdfIn PDF document text
    • https://mupibidegupek.weebly.com/uploads/1/3/0/8/130874042/foxisewowixubetaja.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372721/normal_5f895aa7b233d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370285/normal_5f93121282b74.pdfIn PDF document text
    • https://mujetuzavos.weebly.com/uploads/1/3/4/2/134266282/9286652.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/197619d3-aa55-43de-86a5-75a440eb3ed4/atividades_de_ciencias_sobre_animais_vertebrados_e_invertebrados_4_ano.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e63d8662-2a7c-4c0b-92ec-e59cd0e75769/8507391281.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75797556-78b6-41a9-b8dc-bc54b4447d23/44911534394.pdfIn PDF document text
    • https://s3.amazonaws.com/ragejufa/xapelomoxetuko.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0301fb78-15d7-41d9-80e3-72293b0022b6/82797050128.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1e414499-c576-4ac7-acf1-d304c1eadffe/48932790004.pdfIn PDF document text
    • https://s3.amazonaws.com/zunewidimem/noxalurunedujo.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_off00005665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5665 5028 bytes
SHA-256: 002aadd7fddc7edcda3af3f78a86e1b013436c7bef3bd46f26d247c38b58c73e
font_01_sfnt_off00006755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6755 9528 bytes
SHA-256: 4f311a59ca11692f5a90d91e0b790c3ddc384c81fa0e154109681468d12d9b33