Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0965453d48bfc70…

MALICIOUS

PDF

85.5 KB Created: 2021-03-14 03:41:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-20
MD5: 6156cbf0b7d30a7e11bc7528ffab2a4c SHA-1: 79f42e630e30bf95bad4fc8d322fc5e8f6bf0ff6 SHA-256: c0965453d48bfc70f8964352627f3fbc304b4358212fe9fc86eecbc8a9e97e40
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a suspicious domain, which is likely a phishing lure. ClamAV detection and ML classification confirm the malicious nature of the file. The presence of embedded URLs and the overall structure suggest an attempt to redirect users to malicious sites, likely for credential harvesting or malware distribution.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://jacksth.ru/award?keyword=partnership+deed+example+pdf PDF link annotation
    • http://goossyy.online/subject_verb_agreement_activities_with_answersb6p2i.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4388627/normal_600a7a76e19bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448539/normal_5feefc39a862a.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4388271/normal_5fcba7c7002e1.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420775/normal_5fe0a455bf1be.pdfIn PDF document text
    • http://helplnstagramcontact5087423.com/pikilakebfad4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4424349/normal_604b24c2c8bbe.pdfIn PDF document text
    • http://vizilirudigub.getenjoyment.net/fusidazowedigagife.pdfIn PDF document text
    • http://verifybadgehelp.com/what_is_dominos_pizza_sauce_made_ofhbybz.pdfIn PDF document text
    • http://nanolenka.xyz/giletekesetodux8m0ci.pdfIn PDF document text
    • http://pressit.fun/lozodesupu595ls.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420910/normal_60248dd8c57f7.pdfIn PDF document text
    • http://gusevoxuzuwelap.mywebcommunity.org/are_parallel_lines_similar.pdfIn PDF document text
    • http://erogancolumbia.site/what_happened_to_the_book_of_enoch_in_the_biblei2hda.pdfIn PDF document text
    • http://vovality.club/vevebivixipuxorlgus.pdfIn PDF document text
    • http://gutprod.xyz/how_to_write_an_outline_example3oh45.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4491412/normal_600488280534b.pdfIn PDF document text
    • http://bidizujimon.getenjoyment.net/guguzimoso.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://tixofimisupabev.onlinewebshop.net/what_age_do_you_leave_the_care_system.pdfIn PDF document text
    • http://saxodanokijaj.atwebpages.com/d-link_dir-615_technical_specs.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00010361.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10361 5028 bytes
SHA-256: b483466ff9f3d505e828e0f3900cbacd1a0537873fcdf96d1f8433dee3e96723
font_01_sfnt_off00011443.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11443 11336 bytes
SHA-256: 4484f160f858ad7ddb735ed08d0744f94392bb4f411cdb05d5cd85a189c984fb
font_02_sfnt_off00013ac4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13AC4 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3

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