Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd6903fa75dc94c…

MALICIOUS

PDF

63.4 KB Created: 2020-11-25 00:32:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 9a20a004f21f0d85306712e9e24ad8ba SHA-1: bfb73031defd7f4d486eb48583fa6cbbbba27192 SHA-256: ffd6903fa75dc94c14d2ae14b8dcca598d30d6869922987b5f0696f1c2e623a7
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 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://ggtraff.ru/strik?utm_term=nova+becoming+human+part+2+worksheet+answers In PDF document text
    • https://suzotavuni.weebly.com/uploads/1/3/4/7/134765747/4045515.pdfIn PDF document text
    • https://sawuraba.weebly.com/uploads/1/3/4/7/134720576/karuruxem.pdfIn PDF document text
    • https://zulatikuwa.weebly.com/uploads/1/3/0/7/130776211/2745832.pdfIn PDF document text
    • https://nidiladidubupa.weebly.com/uploads/1/3/4/7/134753920/zakudaroxijababufodu.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/5977359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487423/normal_5fbc5f84cd24f.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/jajuzasalikirut/chess_engine_houdini.pdfIn PDF document text
    • https://s3.amazonaws.com/busutafitufe/24750906920.pdfIn PDF document text
    • https://s3.amazonaws.com/datarofapakil/retugagowalik.pdfIn PDF document text
    • https://s3.amazonaws.com/dixaleko/afro-_asian_literature.pdfIn PDF document text
    • https://s3.amazonaws.com/wemupajese/crystal_pacific_windows.pdfIn PDF document text
    • https://s3.amazonaws.com/jumedemimo/mundial_femenino_en_vivo_gratis.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_off0000bb7b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB7B 5772 bytes
SHA-256: 7bdd3b9ba063e4bc9ba618f363f157bd0f6fc4d50f771f191b8b22f4a07dfd2a
font_01_sfnt_off0000cf12.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF12 9920 bytes
SHA-256: 79e40017fbcefa431384c8642cd0b29bd5073c295477534877a29cc0e1a6338f