Malicious PDF — malware analysis report

Static analysis result for SHA-256 90101e630addde0c…

MALICIOUS

PDF

74.2 KB Created: 2020-12-27 09:18:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 5922ce54021d95a1dee9c19a22eeefa8 SHA-1: b27e90f5aa0664c69039f6e293b5b452b46a70fe SHA-256: 90101e630addde0c0c3ff5432dc019b9addfd9195b0aa4f107e989c566f1a89c
96 Risk Score

Malware Insights

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

The PDF file was flagged by ML classifiers and ClamAV as malicious, containing an embedded URL that points to a suspicious domain. The document body, though heavily obfuscated, appears to be a lure, likely intended to direct the user to the external URL for further malicious activity. No scripts were extracted, but the presence of the malicious URL is a strong indicator of a phishing or redirection attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://traffset.ru/strik?utm_term=bee+gees+top+songs+youtube PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4454289/normal_5fa4b4ad415d9.pdfIn PDF document text
    • https://cdn.sqhk.co/lepapina/fdiffic/pulse_secure_client_configuration_file_location.pdfIn PDF document text
    • https://cdn.sqhk.co/purovufizu/ggihicg/dotumokamugewomowawarila.pdfIn PDF document text
    • https://cdn.sqhk.co/madeparev/U5hfjeP/26987645359.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385198/normal_5f973f5ccbb18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413370/normal_5fc81402dc207.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418000/normal_5fc18948b3953.pdfIn PDF document text
    • https://cdn.sqhk.co/wukibezoso/jjgiyjh/12031825052.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369138/normal_5f9103092e4bd.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4490001/normal_5fe3ffe121ceb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4417049/normal_5fb935a4b672f.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/f5fe2029-c117-4b08-a7f4-32743f3ca013/barcode_scanner_system_price_in_pakistan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6194de55-1746-4373-99a1-1f5a0523d755/27726017934.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_off0000e5bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE5BF 4940 bytes
SHA-256: 9966d0d07521ee77d82a2b263c9a8f50d9f94a94048937a83a874c5a7eb529bc
font_01_sfnt_off0000f6b5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6B5 10944 bytes
SHA-256: e146978aa396502051620eba8c698c8e89a2ebdca27f974fd7afabe1b5bb1460