Malicious PDF — malware analysis report

Static analysis result for SHA-256 5720814aa85f6aad…

MALICIOUS

PDF

68.5 KB Created: 2021-02-07 09:43:58 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-09-18
MD5: ada0ecebb6f9101f36eb0973b8d2824c SHA-1: 0df5c9b17d9ff81ec141661b31b7cf478679fd76 SHA-256: 5720814aa85f6aad978e2558c33808c262694b8479852b5189b0937f31cab4d9
96 Risk Score

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://maypoin.ru/123?utm_term=woodworking+for+mere+mortals+workbench PDF link annotation
    • http://avtovishki-msk.ru/45584324050iu1oi.pdfIn PDF document text
    • https://cdn.sqhk.co/duzoxibuf/6ggcyjh/30144538694.pdfIn PDF document text
    • https://cdn.sqhk.co/pomorezolo/1A74U5V/39227166514.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4500877/normal_5fc6980594214.pdfIn PDF document text
    • http://jupomolitage.22web.org/internet_manager_chrome_mac.pdfIn PDF document text
    • http://pumba.fun/uml_diagrams_questions_and_answers2rw74.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4477164/normal_5ff1337372815.pdfIn PDF document text
    • https://cdn.sqhk.co/jedugifaxido/jfjh4ii/truck_simulator_19_hack_download.pdfIn PDF document text
    • http://fakaripeti.xyz/analyzing_irony_in_literature_worksheetlpd1z.pdfIn PDF document text
    • http://allrecipes.pro/gst_in_tally_erp_9_complete_guideaqcjg.pdfIn PDF document text
    • http://getbuiss.online/employment_certificate_letter_formatlna1s.pdfIn PDF document text
    • http://reduslim-officialsite.site/5713035678706gbg.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/zedilegol/print_cursive_alphabet_handwriting_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/kokuzuse.pdfIn PDF document text
    • http://gasigigi.rf.gd/weather_report_for_houston_texas.pdfIn PDF document text
    • https://s3.amazonaws.com/nezanurugega/71181410917.pdfIn PDF document text
    • https://s3.amazonaws.com/wapabefizosumi/50210043062.pdfIn PDF document text
    • https://s3.amazonaws.com/wipotegadodorek/academic_ielts_reading_answer_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_off0000cbfc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCBFC 5744 bytes
SHA-256: 4045a0f7df1c76b7e00945d1c683a8468e069a40898a2c52698802907e8bef38
font_01_sfnt_off0000df7e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF7E 10832 bytes
SHA-256: 7757c9a4a977a2da8236ad57afb15da29ec1bdb9cf6e337353937a91388e2fcb