Malicious PDF — malware analysis report

Static analysis result for SHA-256 4ca4287b93003451…

MALICIOUS

PDF

150.4 KB Created: 2021-02-14 11:38:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-16
MD5: 566fc1c07bb25831b3baeeaeae54807b SHA-1: b9854291afcfa3d43eacb8a712aaaf8e47dc3649 SHA-256: 4ca4287b93003451e18e0bf785d52f8bd680d7c437eb29183cabc7cb0021421a
96 Risk Score

Malware Insights

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

The PDF contains an embedded URI pointing to a URL that appears to be a search result, suggesting a lure to download content. ClamAV detection as 'Pdf.Phishing.Trojan' and ML classification further support its malicious nature. The presence of multiple external URLs indicates a potential distribution or redirection mechanism.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9990

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://druttle.ru/wix?keyword=my+beautiful+dark+twisted+fantasy+zip+reddit PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4390643/normal_5fee49dea1470.pdfIn PDF document text
    • https://cdn.sqhk.co/dopuwene/gjcfJJ8/pyramid_run_gameplay.pdfIn PDF document text
    • http://vobonenagixavus.66ghz.com/53641408024.pdfIn PDF document text
    • https://cdn.sqhk.co/zovitamojim/xQjiSdV/10948762886.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418579/normal_5fd3da492d4d6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4374835/normal_60041aaa1d9bb.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381730/normal_5feb5c598084d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420760/normal_6019d97a5e66b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4408858/normal_6007b60249e24.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4448100/normal_5ff9f8cf42be8.pdfIn PDF document text
    • https://cdn.sqhk.co/vomikigiw/Y3jeQ2W/heroes_of_myth_romance_options.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4369912/normal_5ff7704430130.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4454999/normal_6004538d347b7.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://wimifus.rf.gd/static_and_dynamic_character_worksheet.pdfIn PDF document text
    • http://woxutonugosafer.epizy.com/bullett_raja_movie_300mb.pdfIn PDF document text
    • http://xaxotuk.epizy.com/motagenitobotifudo.pdfIn PDF document text
    • http://jofaralufax.rf.gd/email_format_for_calling_meeting.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 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0001bef6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1BEF6 13964 bytes
SHA-256: a9bf8852213a5eacf0af39648fff9552776e328495d7d32128c0385adb069150
font_01_sfnt_off0001ed44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x1ED44 5488 bytes
SHA-256: dd3f9a4d22b33db5bf0fddfbc18d293c3ae779ec0aa2bd5690f9f8934993ff90
font_02_sfnt_off00020027.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x20027 17328 bytes
SHA-256: d3c5375fe8fced3d61c32db53f56fe34309549df07bba3495fb54ef43add8fa5
font_03_sfnt_off000235ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x235CE 16304 bytes
SHA-256: 2ec471bc1dd097ba7445d0d98fae4076614f7d308a936bf5c28a382db3fe60d2

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