Malicious PDF — malware analysis report

Static analysis result for SHA-256 230ed0279dd73177…

MALICIOUS

PDF

68.9 KB Created: 2020-11-17 18:33:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: a54bd554c424280e2f8ebd5aeb97998d SHA-1: d3e76369b5e5ea5267243aed5a21997951f3557a SHA-256: 230ed0279dd73177543cdbdd485b8f99f87bd7b65d6f87c97448852b84d65df1
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 0.9997

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://cctraff.ru/strik?utm_term=taaluma+totes+shark+tank In PDF document text
    • https://cdn-cms.f-static.net/uploads/4371808/normal_5f91625aa289b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366402/normal_5f89b4d500921.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4460042/normal_5fa304e892164.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/sakaburepagase/39866930490.pdfIn PDF document text
    • https://s3.amazonaws.com/leguvefu/44041145861.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22867edc-6b23-4130-b421-ab0f3ad7a9fe/libros_de_kinesiologia.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1d2c8f54-efd8-4aed-ade4-c7fde7e1fed2/12737656572.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/caa6bca2-aa5e-4154-849e-eeaef0f521be/gabodogorabakene.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/resident_evil_2_apk_for_smartphones.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4728bb7c-b478-4f42-803b-b897707b46d0/josidiboxisufupiwujuxure.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/601edd15-10ef-420c-af47-239c9cae6f1f/lovusadene.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_off0000cfb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCFB7 4936 bytes
SHA-256: 5e69afd8c06e50375d3235dfb0a772663d1f4cb18e548fde526b6dfb0de02108
font_01_sfnt_off0000e04d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE04D 11344 bytes
SHA-256: aea9357c31c9518eaf6dc87d5a51abf0e1db6bddc4bfae41b2aca345f3c29276