Malicious PDF — malware analysis report

Static analysis result for SHA-256 8036bb95cb5490c7…

MALICIOUS

PDF

40.8 KB Created: 2020-11-03 13:18:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-14
MD5: a1b5c72d1742a794f283d04e67280d4f SHA-1: 2e70b1145bbddd32a6a813e71b2ea338665ac3a5 SHA-256: 8036bb95cb5490c767a2bef24c731660b0af7531de05eb830d12774e1cb1fd81
94 Risk Score

Malware Insights

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

The PDF contains a link disguised as a Minecraft server list, which redirects to known malicious infrastructure. The ML classifier strongly indicated maliciousness, and the embedded URL is a primary indicator of a phishing or redirection attempt. No scripts were extracted, but the PDF structure itself facilitated the malicious link.

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://gettraff.ru/aws?keyword=minecraft+servers+list+pc+mineplex In PDF document text
    • https://cdn-cms.f-static.net/uploads/4411245/normal_5f9a3be5ad17e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366028/normal_5f86f9faefe36.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369660/normal_5f8a2164827ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f885c737f97d.pdfIn PDF document text
    • https://jipafopabos.weebly.com/uploads/1/3/3/9/133986828/697084.pdfIn PDF document text
    • https://mefemanodi.weebly.com/uploads/1/3/1/4/131454269/paxapeli_dulovebebaxo_pofeligor.pdfIn PDF document text
    • https://rusepokobedog.weebly.com/uploads/1/3/4/3/134366979/4bd124983370.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388432/normal_5f95000686998.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/a05bf9db-8eee-428d-a911-fbd7d2f9cfa0/mabitamoliw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/73b69712-2c80-4ef5-ab8d-a1385f06ad76/94612804675.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/possessivartikel_deklination.pdfIn PDF document text
    • https://s3.amazonaws.com/buponuwebi/quote_sandwich_worksheet.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_off00005d6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D6D 5296 bytes
SHA-256: 3ef8b75f379b294c4213941117add516537266344731d51f222c6828067b2ee2
font_01_sfnt_off00006f73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F73 12176 bytes
SHA-256: 3b10b08b60f7d45b2cc96811457d609c3edb0fab0a48cc1dc3b2c4c4622e037c