Malicious PDF — malware analysis report

Static analysis result for SHA-256 2edd9fad8d5a6964…

MALICIOUS

PDF

85.4 KB Created: 2020-12-30 08:20:45 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 63e284f4675f8920f5af68c7f01fb382 SHA-1: c0d0762d352a4de46e5022b2c257b4e94ca97a49 SHA-256: 2edd9fad8d5a69644555d130250e1574f4461f36271a2143896a1cd1c0512bcb
154 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 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 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
  • 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?utm_term=que+es+leer+entre+lineas In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380523/normal_5fd171a6406fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485016/normal_5fd2aace76650.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367019/normal_5fc60561dc738.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475737/normal_5fae0900836d8.pdfIn PDF document text
    • https://cdn.sqhk.co/mugejufunij/jhOrz6k/ropibiti.pdfIn PDF document text
    • https://cdn.sqhk.co/lewivapawo/hijj4Xu/best_wwe_finishing_moves_2019.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4389603/normal_5fa2696298487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375073/normal_5fe83b001f13e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376098/normal_5f915ba99072f.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/81aba076-ef2f-4c72-8e01-467a1040ba0c/40560932483.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/88cf5077-e033-4422-a491-eea7b35773ff/56698322273.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bfe4c27e-54bd-4372-9325-f881f9a74c3f/red_balloon_saloon_happy_hour.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000e7ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE7EE 12100 bytes
SHA-256: 6ae43364ab10502bfab3f805d3ac57aec854acfdd6ab61e9af5c0407f54b75a1
font_01_sfnt_off00010f4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10F4D 4740 bytes
SHA-256: 299f4bf16628ab7263522dec7bf1a18c00c3717910ce3b08a842beb037e798db
font_02_sfnt_off00011f74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11F74 12276 bytes
SHA-256: 657d12fb0998e85e3a32ac9a47fa6d0b1d529f993ee7a1870c6bec36fd0b715c