Malicious PDF — malware analysis report

Static analysis result for SHA-256 b1462425b110a584…

MALICIOUS

PDF

68.4 KB Created: 2020-12-09 19:00:41 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 306490c7168c0f7b836161fc04945ace SHA-1: 1acce70e77b6810ff16c1c7a4d145cef05660d25 SHA-256: b1462425b110a584151945d5db0f2aedf5516d3f09aef137143f61f991cb1092
154 Risk Score

Malware Insights

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

The PDF contains a link to a known malicious redirector, identified by the 'PDF_MALICIOUS_REDIRECTOR_LINK' heuristic. The ML classifier also flagged this PDF with a high probability of being malicious. The embedded URL 'https://cctraff.ru/123?utm_term=what+is+the+chancellor%2527s+list' is the primary indicator of malicious intent, likely leading to a phishing page or malware download.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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://cctraff.ru/123?utm_term=what+is+the+chancellor%2527s+list In PDF document text
    • https://cdn-cms.f-static.net/uploads/4380705/normal_5f9c49e9b4f89.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4411229/normal_5fa23bae161a8.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fbce344be7cfc36344e8aaf/t/5fbceeea68bfc51861666a0c/1606217450687/kimupadovumolo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc5845d3dfdd95b60f460bc/t/5fcd442c6f0099009e7123e3/1607287853112/crosswords_with_friends_september_30_2020.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2bed292c50b1a1e8370b6/t/5fd04dc7a040431536ba9ea3/1607486920343/tafefogaxaporetabowiwe.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc2f0f6f7cf8c7540383d7d/t/5fc3f325e18c5c478e75b508/1606677286944/56080079983.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/737f323e-e118-4cbb-a316-545537f3343c/33338825787.pdfIn PDF document text
    • https://s3.amazonaws.com/tinajabizoreguf/pefivonirijexisusizatagu.pdfIn PDF document text
    • https://s3.amazonaws.com/nijudow/zisis.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0f79e2e34347c7044618a/t/5fc15ca47acac6192af3a53f/1606507690536/76939908468.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc1841caffbf90a66eed52e/t/5fcc39b9662d5e24e095093a/1607219642697/pusotasod.pdfIn PDF document text
    • https://s3.amazonaws.com/mexesazaxasa/important_facts_about_rosa_parks_childhood.pdfIn PDF document text
    • https://s3.amazonaws.com/genukopapovixo/azure_information_protection_aip_scanner.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a943bae0-9643-42c4-a66d-487ed601ba01/zidokuw.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_off0000ced7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED7 4932 bytes
SHA-256: 57c8caf40bfde9d99be5d2e771774073cb897c31d01fcc91f909d8241e5cfbaa
font_01_sfnt_off0000dfaa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFAA 11140 bytes
SHA-256: f3400ea89a7b340219f2d7d88648856d28a240abdab2d2085b78f8d3305914ee

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