Malicious PDF — malware analysis report

Static analysis result for SHA-256 3c92fa01e1bee18f…

MALICIOUS

PDF

67.5 KB Created: 2020-12-19 20:04:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-12
MD5: 5ff60f1dea2e5641cd4b4700054f0d81 SHA-1: 9dddd210c0c2710a8b4adbe534ca6b2f74b450fb SHA-256: 3c92fa01e1bee18f1bb8467cf95babeac429ce13e82d74e98b82b9e901e63afb
154 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a malicious redirector link pointing to 'ggtraff.ru'. This URL is presented to the user as a Bible download, indicating a phishing or scam attempt. The ML classifier and ClamAV detection further support the malicious nature of this file.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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/aws?utm_term=bible++nkjv+pdf In PDF document text
    • https://cdn-cms.f-static.net/uploads/4379854/normal_5f8abd8ad4861.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4502817/normal_5fc8a6a8872ba.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447880/normal_5fc3313b3d01a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414868/normal_5fa51617c3b1e.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369315/normal_5fc73a091820d.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/bidurudilidujug/how_to_install_cantilever_deck_forms.pdfIn PDF document text
    • https://s3.amazonaws.com/sazomo/88116919331.pdfIn PDF document text
    • https://s3.amazonaws.com/takurugilij/jiparoxipatidosiv.pdfIn PDF document text
    • https://s3.amazonaws.com/gifiz/zuwubunuzodulog.pdfIn PDF document text
    • https://s3.amazonaws.com/xamapebonijos/moxikegolukalavaxulukafu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4f836111-fdc0-4d40-9f86-be15dde98242/pathfinder_2e_guide.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_off0000cc7c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC7C 4940 bytes
SHA-256: 771c15dd2fce58fcca2b6d1f6765376b4ec2ac21c2bdb4e7b983f322c0b8363d
font_01_sfnt_off0000dd69.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD69 10672 bytes
SHA-256: 8742f85b4660a60be0abd154a7c0a25782aa1460fd14569e36681b47393db8cb