Malicious PDF — malware analysis report

Static analysis result for SHA-256 1a42f884f6ce9c26…

MALICIOUS

PDF

81.8 KB Created: 2021-03-14 22:42:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 1d13c5c267ddbfb86cf506a7c0621d18 SHA-1: 31ce404ccef684f9cf99bee1e1a30b426334d65e SHA-256: 1a42f884f6ce9c26f85b4e201750ff63c69c77d3000121193fd2fd7d66931f52
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 0.9992

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://jumiwimov.ru/strik?utm_term=universidad+del+tolima+sede+bogota+tunal PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4494668/normal_5fec56c21998a.pdfIn PDF document text
    • http://metilukizitase.iblogger.org/sample_employment_verification_letter.pdfIn PDF document text
    • http://fafabil.getenjoyment.net/financial_analysis_report_template.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385413/normal_6049a22c72605.pdfIn PDF document text
    • https://cdn.sqhk.co/zijatiki/Goqhdjj/67923898129.pdfIn PDF document text
    • http://fuvisetitisenon.mypressonline.com/63428925266.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4469860/normal_60347187eacbf.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379733/normal_60107159d68f4.pdfIn PDF document text
    • http://ponopawux.iblogger.org/bde_full_form_and_meaning.pdfIn PDF document text
    • https://cdn.sqhk.co/vadetegubufo/gdifvhb/22835289701.pdfIn PDF document text
    • http://delinapod.mypressonline.com/fundamentos_del_voley_saque_de_abajo.pdfIn PDF document text
    • https://cdn.sqhk.co/tirazirevemu/jjh0ie9/do_you_say_hi_in_spanish.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420612/normal_6013dcd8efd32.pdfIn PDF document text
    • http://fukiwurezopukof.mywebcommunity.org/public_finance_administration.pdfIn PDF document text
    • https://cdn.sqhk.co/bosamame/gOjagiB/voice_assistants_list.pdfIn PDF document text
    • https://cdn.sqhk.co/wareberefiz/igBeid2/bricks_and_balls_mod_apk_revdl.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/bibejovixapis/34209031914.pdfIn PDF document text
    • https://s3.amazonaws.com/wovitiku/97737132205.pdfIn PDF document text
    • https://s3.amazonaws.com/xezujuxoz/sultan_china_box_office_report.pdfIn PDF document text
    • http://vakusidoler.epizy.com/construction_kickoff_meeting_agenda_template.pdfIn PDF document text
    • http://mezizafija.rf.gd/kevebimufuxuxowixasurafa.pdfIn PDF document text
    • https://s3.amazonaws.com/ravuxudibure/annotates_google_drive.pdfIn PDF document text
    • https://s3.amazonaws.com/sakaburepagase/como_cambiar_el_formato_de_numero_en_excel.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
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ea19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA19 5336 bytes
SHA-256: 5c274e0998ad6239ae4bcc634c025e58529736e205b94a9d16e7298ac895ac37
font_01_sfnt_off0000fc2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xFC2E 11920 bytes
SHA-256: 1a8e4ae6b8b220e0d4113df280a7f30057477d00edfb8f4492c093801680c02d
font_02_sfnt_off0001226b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1226B 16204 bytes
SHA-256: 541fa2b6826b0add99b7d5a173ef1e6a5567607b5192f75b810eb17d6a563501

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