Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c7226c3c11eb3fc…

MALICIOUS

PDF

67.7 KB Created: 2021-01-11 18:15:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: fa5e8b144e7923444ba48aaa44f92384 SHA-1: 22544f591d4d60b3fc7dea063c1f30ce97432f41 SHA-256: 4c7226c3c11eb3fc7d492f65776132e8ca3522e8fba00290b5418faac51feef6
96 Risk Score

Malware Insights

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

The file was detected as malicious by ClamAV and an ML classifier, indicating a high likelihood of malicious intent. The PDF contains an embedded URI pointing to 'https://traffset.ru/aws?utm_term=elementor+addons+templates', which is likely part of a phishing or malware distribution scheme. The document body is heavily obfuscated, preventing a clear understanding of its specific lure, but the presence of external URLs and the malware detection strongly suggest a malicious purpose.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9995

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://traffset.ru/aws?utm_term=elementor+addons+templates PDF link annotation
    • https://cdn.sqhk.co/diridenafa/47jbVCU/case_knife_money_clip.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449170/normal_5ffb8ad9e0791.pdfIn PDF document text
    • https://site-1168207.mozfiles.com/files/1168207/66282042408.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4417670/normal_5fced2a41a9b8.pdfIn PDF document text
    • https://cdn.sqhk.co/xubulozirod/fxOjcHB/masha_and_the_bear_party_supplies.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381544/normal_5f8ddabc203b7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454041/normal_5fad665fbfd24.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/bikikanafopavu/summer_of_my_german_soldier_book.pdfIn PDF document text
    • https://s3.amazonaws.com/henghuili-files2/setuwewev.pdfIn PDF document text
    • https://s3.amazonaws.com/wixamupelinere/72975990897.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000c0ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC0EA 4804 bytes
SHA-256: 60c770550b30281c01a80883bfa236e4cac903be87011e41b3ebd970de6ebe85
font_01_sfnt_off0000d117.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD117 10300 bytes
SHA-256: 8726396ed1f524f40c868afe220d7f6d2212f6c1e0423bdbbafc303d8f20c4df
font_02_sfnt_off0000f441.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF441 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34