Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f820914c965567f…

MALICIOUS

PDF

75.0 KB Created: 2021-02-26 10:47:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-15
MD5: 43cf31f57da88af7d56e67c708c5f742 SHA-1: e978850af2a6367b239a9d899a07ecf513d0a123 SHA-256: 3f820914c965567f360f2757862f0fbbbfe41532060f627019b06b8fd15d4735
94 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection and an ML classifier, indicating malicious intent. The embedded URI points to a URL that appears to be part of a phishing or malware distribution scheme. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest it's designed to trick users into visiting a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9830

Heuristics 3

  • 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
  • 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://kuzutuzo.ru/award?keyword=que+son+los+titulos+y+operaciones+de+credito+en+mexico PDF link annotation
    • http://xidoxuj.22web.org/universal_property_and_casualty_insurance_underwriting_guidelines.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4470401/normal_5fd92146a9aaf.pdfIn PDF document text
    • http://bloodcraft.online/ranonijujuligojudilowugore06yn.pdfIn PDF document text
    • https://cdn.sqhk.co/gadewekunel/ejhjbie/driving_in_car_with_covid.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408319/normal_5fd7b39086876.pdfIn PDF document text
    • http://tehnotop.space/56486864078dq23t.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453909/normal_5fcb54adf1491.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pisisagul.epizy.com/66986280498.pdfIn PDF document text
    • https://s3.amazonaws.com/wuwabobujasivor/invitation_to_general_assembly_meeting_template.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/html_css_and_javascript_tutorial.pdfIn PDF document text
    • https://s3.amazonaws.com/dogazisuze/compound_words_worksheet_for_class_5.pdfIn PDF document text
    • http://sedobuxekazadi.rf.gd/pulalorivojufix.pdfIn PDF document text
    • http://puxebipupaluna.rf.gd/ubiquiti_bullet_m2_setup_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/tajimipojimo/list_of_former_aviation_minister_in_nigeria.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/79353261359.pdfIn 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_off0000f5bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF5BF 5452 bytes
SHA-256: 8c012b0ecb38e4793ae9b2779f82278c23263c36a5b0a70b3e2f313e72d19366
font_01_sfnt_off00010835.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10835 11416 bytes
SHA-256: 7cac2a90a413d61d228d9170908b3b64b15f83ce3b2735903cc66d8f55fd13e9

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