Malicious PDF — malware analysis report

Static analysis result for SHA-256 81e32b85b35ebe37…

MALICIOUS

PDF

42.0 KB Created: 2020-11-09 15:46:37 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4317e3579fea284a1d2662ecdc593308 SHA-1: d2f24a3e11bb465d246410a82ccf705ca2e1c1d7 SHA-256: 81e32b85b35ebe378a8ccf2248ac82657e65f35ca56f5d59b90218d467ba9ef1
94 Risk Score
Tags
free-cdn-ebook-manual-lure

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://traffmen.ru/123?keyword=elise+l+wolff+elementary+website In PDF document text
    • https://xubesizodumuruk.weebly.com/uploads/1/3/4/7/134703494/5333873.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409258/normal_5f9445e798a6d.pdfIn PDF document text
    • https://xamegazu.weebly.com/uploads/1/3/4/4/134440804/zapot.pdfIn PDF document text
    • https://wenilitedosi.weebly.com/uploads/1/3/4/3/134315728/061b14e76031.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427097/normal_5fa8b56727595.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368781/normal_5f8912fb67f32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373509/normal_5f898215c0eb3.pdfIn PDF document text
    • https://kaxebovirufuj.weebly.com/uploads/1/3/4/3/134399635/f10f12c6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420441/normal_5f9f1f55ebe6d.pdfIn PDF document text
    • https://pamaridefudeluz.weebly.com/uploads/1/3/0/7/130776324/damatap.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/7ea7a071-c4f8-4f3e-929c-1a0bb39e627b/xirijanulatigar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd34f423-bb65-43aa-819c-4fdbdabba896/download_adobe_flash_professional_cs.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/669cc086-7c6b-41a0-8b6a-49e708f934d6/information_processing_cycle.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_off000065a0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65A0 5204 bytes
SHA-256: 0b849013d9165077bfe5c5f16c4eb1fe5cdc61de66eea3176cd81db7099d4721
font_01_sfnt_off00007755.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7755 10440 bytes
SHA-256: 10d348589cead76499f112aed7e891c415641296b6f494a98345be42429a5009

Open this report in the interactive analyzer, or submit your own file for analysis.