Malicious PDF — malware analysis report

Static analysis result for SHA-256 e61c9d285ca49c0d…

MALICIOUS

PDF

68.8 KB Created: 2021-02-12 10:50:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: 47ca9aa7d23f0c65d16f99c94391f9d5 SHA-1: 9862940acc82dc044ee5e71a9b6311f5f03097af SHA-256: e61c9d285ca49c0deb59c6582745f7db7cc0c11dc432a3927bed6a5e2e48720e
154 Risk Score
Tags
free-cdn-ebook-manual-lure

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-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://yafferge.ru/wix?keyword=grim+soul+hack+mod+menu In PDF document text
    • https://cdn-cms.f-static.net/uploads/4402938/normal_601f7abb69f69.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4452193/normal_5fe2f666dca12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4451376/normal_600d26fb680f2.pdfIn PDF document text
    • https://cdn.sqhk.co/detazido/ehiegh5/72604005580.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393515/normal_6009e8bd3a21f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4471092/normal_5fee10e87ffeb.pdfIn PDF document text
    • http://bofinaposo.iblogger.org/chhichhore_movie_songs_zip.pdfIn PDF document text
    • https://cdn.sqhk.co/jenexovu/jZicdJe/3d_bike_games_for_pc_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wadelovelo/hamijvT/batixeba.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/xokebore/boston_consulting_group_india_report.pdfIn PDF document text
    • http://newotev.rf.gd/provisioning_profile_apple_developer.pdfIn PDF document text
    • https://s3.amazonaws.com/kotidox/bulk_insert_format_file_double_quotes.pdfIn PDF document text
    • http://wodasakuzetu.rf.gd/cisco_2960_8_port_poe_switch_datasheet.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_off0000d15a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD15A 5272 bytes
SHA-256: df205d7588bda87b43e7718ee892260c55df28480b8d3489c3d6045c6c9ef795
font_01_sfnt_off0000e316.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE316 10380 bytes
SHA-256: 97ef948cc471453e6c34fb854a8a3d692499107e2d676c7921b3907a7588efd5

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