Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6b26b1f8bbc4444…

MALICIOUS

PDF

61.1 KB Created: 2020-11-22 21:21:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 3cbf336120e00ac10a66eaba0d615d21 SHA-1: 166a5e592e36e396eee63ebc2c72a3d8f1b00e3a SHA-256: b6b26b1f8bbc4444eb959170a2a063abf57aa7e6515f62b168405077be9f86b1
96 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 embeds external URLs that direct users to attacker-controlled resources. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffine.ru/123?utm_term=cursive+capital+letters+practice+worksheets PDF link annotation
    • https://vixijusodu.weebly.com/uploads/1/3/0/7/130776714/6919663.pdfIn PDF document text
    • https://gaturavokig.weebly.com/uploads/1/3/4/3/134317265/017394c3.pdfIn PDF document text
    • https://dasateju.weebly.com/uploads/1/3/4/5/134582383/8708115a8.pdfIn PDF document text
    • https://nurosamemozixa.weebly.com/uploads/1/3/4/3/134375837/gevukexasugek-fipegi-fitana-lojebazozoma.pdfIn PDF document text
    • https://sozipufejelaj.weebly.com/uploads/1/3/4/3/134352325/vewak.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/463d29fa-ac16-43c1-abcc-6fc153cff32b/fl_studio_mobile_android_apk_gratis.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74565ddd-469b-4e89-ae36-78b0a0859495/92982209347.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7f6c2db-7eb2-4278-b1d6-384150ee3139/story_elements_worksheet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12a9be18-ddbd-490a-adf7-83705340ef4e/29219144964.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ff010f12-c476-43f2-85b4-3895a9a2f702/dagatubanapux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/991371ea-2727-498b-9fc3-b623daf0a736/24749122511.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_off0000b594.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB594 5140 bytes
SHA-256: c96335751b46124f98276ebd9b0100e543731420aa6d0ec039118feccb23e593
font_01_sfnt_off0000c71b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC71B 9572 bytes
SHA-256: bab67f67a3eb48aeddd769cb384828728d996bb25bef8b1389250df9c1679e6f