Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ad0b87909e8fcf8…

MALICIOUS

PDF

78.1 KB Created: 2021-03-23 15:28:35 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-23
MD5: dd54be91cc9ad122a4c80ac54532ad89 SHA-1: 5497e95c48d8e87ea564d92b9cfcb37fd8161d5c SHA-256: 1ad0b87909e8fcf8faf7dcd7a95ba317906b9e4bbc5d7e06509329781d2e3a37
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 0.9998

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
  • 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://nipisod.ru/award?keyword=fiche+m%25C3%25A9tier+assistant+de+direction+pdf PDF link annotation
    • http://wubujogulekaf.iblogger.org/business_letter_handbook.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489251/normal_5ff782b4c127a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4427274/normal_6016305eb3db0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487409/normal_600b546935fee.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460449/normal_5fca9433ef997.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4372980/normal_5fc60356cfff9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529087/normal_5fe097e8227ce.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495846/normal_5fcd64251fbf9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447912/normal_6056c21fb7491.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4489409/normal_603fbc0d7702e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4391649/normal_601ccd45d6646.pdfIn PDF document text
    • http://lemiritafuwab.22web.org/sujane.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375200/normal_602b38fbf25b9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4387715/normal_5ffd61a535afc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380379/normal_5fe59a585478e.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/batoragubukepo/how_does_cultural_diffusion_online.pdfIn PDF document text
    • http://xudonujedetatik.epizy.com/us_naturalization_test_questions_and_answers_2018.pdfIn PDF document text
    • http://rinexevijexaxi.epizy.com/farmacos_antihipertensivos_mecanismo_de_accion.pdfIn PDF document text
    • https://s3.amazonaws.com/jebokizez/aditya_birla_capital_logo.pdfIn PDF document text
    • https://s3.amazonaws.com/donake/intangible_assets_not_reported_on_balance_sheet.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_off0000f31b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF31B 5460 bytes
SHA-256: 125d0e4db2b2a3d21fd6f08fe0db7ee6fb2bf58dd29977c5cbabc940c6607ee5
font_01_sfnt_off0001053d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1053D 11296 bytes
SHA-256: a1dba6b0757d94a709f9b19527bc40cf5c3cf1b70fe332c0c36d749e661e1472

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