Malicious PDF — malware analysis report

Static analysis result for SHA-256 6064dc8da3893b74…

MALICIOUS

PDF

68.2 KB Created: 2020-12-15 21:39:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-31
MD5: f83870b09bdb335f6faa5abaec1d9b8b SHA-1: 5c7fc11d70a92711169ac0a3beefc6639a6697a0 SHA-256: 6064dc8da3893b74aa1151d518dfbff5e76c73dff53e1e4bb7147d91bf58ff4e
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF file contains a malicious redirector link and uses social engineering tactics, including a fake download button and a lure for a browser update, to entice users to click the link. The ML classifier strongly indicates maliciousness, and ClamAV also detected it as a phishing trojan. The embedded URL is the primary indicator of a malicious redirect.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=it+ends+with+us+pdf+download In PDF document text
    • https://fifuvifelikedub.weebly.com/uploads/1/3/4/6/134662232/raligoxime.pdfIn PDF document text
    • https://bilujadaju.weebly.com/uploads/1/3/4/7/134772480/5ceae98d1432c96.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384325/normal_5f8ea31f75449.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/5fc512d3ff13940aa25a72a5/t/5fc935a9fbc718432b004055/1607021993234/xosasurimerunuluv.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc0e7ad6609fd0ee79153f2/t/5fc16646e18c5c478e307253/1606510151212/siwelisamugolabonixib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/63b09af7-44d0-41bf-9a74-00538276cbdb/80941038606.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bb15a412-22bf-4d01-aa49-796b81c0586b/critical_care_nursing_books.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ab9aed6-2042-4140-8e31-b30c7fc6c437/kenshi_world_map_cities.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc56016a13a450bab124a3f/t/5fd6eb3cffab5d3c560e3f87/1607920445482/46030738222.pdfIn PDF document text
    • https://s3.amazonaws.com/zepifudoxapo/pdf_bestanden_samenvoegen_mac_lukt_niet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bc5c1f2-94bf-4d38-90b6-33f5bb1f7533/kamijotasojugune.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55680104edf1d779e9a83/t/5fd73004b1c3f31c7a9c2baa/1607938052921/browser_for_android_2._1_apk.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fcf0d4daffad1251da7b188/t/5fd180cbfec2791e31fe8a0b/1607565519906/44605049630.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_off0000ce63.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE63 5064 bytes
SHA-256: 8205b7cdb5606d35848646246e546de8ad521ca24f8c57d4636784ddfe32de38
font_01_sfnt_off0000dfb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFB0 10692 bytes
SHA-256: 4bb23edb9c080139c7878c0bb80cb2cab8ef076b3507967b1ea44b51e3a7bbb1

Open this report in the interactive analyzer, or submit your own file for analysis.