Malicious PDF — malware analysis report

Static analysis result for SHA-256 9b44fe11155a3ba5…

MALICIOUS

PDF

66.1 KB Created: 2020-11-26 07:19:09 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 3fb5a0ed1d441d930ae535f84a503400 SHA-1: d6ba205e6e8b4d76f64ba8eb01cc8e2f51478abc SHA-256: 9b44fe11155a3ba51510f8a5dea232a8f8abe7ccfec676c863de065ff39622f8
96 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 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 0.9995

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=halo+bad+blood+plot PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4414156/normal_5f9ce0151ca19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383467/normal_5f8daabb5a7e2.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383928/normal_5faf0bf71a82d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418383/normal_5fa48f332178d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4443354/normal_5fbbd7b7d82a3.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/fojaxexino/93370827908.pdfIn PDF document text
    • https://s3.amazonaws.com/biwubeleba/72954791081.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bbb63b1-f8d9-4563-b8d9-fe8350e8404c/19857419824.pdfIn PDF document text
    • https://s3.amazonaws.com/taturi/collate_data_from_multiple_excel_sheets.pdfIn PDF document text
    • https://s3.amazonaws.com/zikeko/the_i_of_it_friv.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_off0000c773.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC773 4780 bytes
SHA-256: 6af3e1980ff26aaed675a55e45877a848bb9eadb647d5ca017b845cd90cd2661
font_01_sfnt_off0000d7bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD7BB 10672 bytes
SHA-256: 6b28ba262fd84214eb26f6ae6c2055363825754f5c613041c653222aac8dcae3

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