Malicious PDF — malware analysis report

Static analysis result for SHA-256 85f8b12ed2c28812…

MALICIOUS

PDF

72.8 KB Created: 2021-02-28 22:26:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: e39c12d55c42e1e4812353c1c4cc357e SHA-1: f9e4ac446ccf2145e5fd5535c38897947de18e5f SHA-256: 85f8b12ed2c28812b8566fcaaf9927e3aa5a6125ab56aa341288dab4b0ebbad9
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 0.9997

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
  • 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://xezojetit.ru/strik?utm_term=what+to+eat+for+a+long+life PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4366003/normal_6009caa929254.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420244/normal_6008a912a64e7.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369632/normal_5ff2663e864fe.pdfIn PDF document text
    • https://cdn.sqhk.co/togareguko/aeiiijd/generalized_anxiety_disorder_testimonials.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4451228/normal_600326c878a18.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418778/normal_600de14bd1e60.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4404103/normal_5ff9b49eb6c14.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374207/normal_5ff6945f52020.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/gekojulog/inej_ghafa_six_of_crows_fanart.pdfIn PDF document text
    • http://dikuwunoxoxa.epizy.com/86196743.pdfIn PDF document text
    • http://nazonuretowu.epizy.com/39928424924.pdfIn PDF document text
    • https://s3.amazonaws.com/gaxuremewuger/metro_2033_redux_library_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_off0000e1eb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE1EB 4864 bytes
SHA-256: 20e1c3bf774bfbb6d475030aa92f342b6efe988c8a11d85a683f12e36b33c0b2
font_01_sfnt_off0000f282.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF282 10116 bytes
SHA-256: 5026f2b2d9cc6a5d2219e438cb7489e6d03de00d81ee232452ef3ef7a658a54b