Malicious PDF — malware analysis report

Static analysis result for SHA-256 0364e6aae9b62915…

MALICIOUS

PDF

95.7 KB Created: 2021-03-17 06:56:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-05
MD5: fdd01738ab3b9e7d5856d466c5b8fc98 SHA-1: ca3c887f130dc91f98b5b57b064a88db88f8f25f SHA-256: 0364e6aae9b6291569114a87317179ca7df704d67fabbef3197fdb65992811e5
96 Risk Score
Tags
free-cdn-ebook-manual-lure

Malware Insights

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

The file is a PDF document that contains an embedded URL disguised as a manual. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. The embedded URL is the primary indicator of compromise, suggesting the document is a lure to redirect the user to a malicious site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9993

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://lozipotod.ru/award?keyword=arduino+upgraded+learning+kit+manual+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4457311/normal_600de7a805c3b.pdfIn PDF document text
    • http://maska-respirator.com/tupoboselewolrqfk2.pdfIn PDF document text
    • http://waystep.site/rexawij9cp0w.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4475853/normal_6045fcc2d924b.pdfIn PDF document text
    • https://cdn.sqhk.co/sobexofap/jgkhgig/international_peace_day_in_australia.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373757/normal_601d39c727dc5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365634/normal_5fe6a725aaf99.pdfIn PDF document text
    • https://cdn.sqhk.co/vixukose/hiheYhc/neon_running_shoes_womens.pdfIn PDF document text
    • http://bezprovodov.guru/washington_post_amazon_prime_ukkkyf2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4381090/normal_5fd05ffb417af.pdfIn PDF document text
    • https://cdn.sqhk.co/jonuwezipagi/phihejg/70925649322.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/gopuze/sword_art_online_integral_factor_crafting_guide.pdfIn PDF document text
    • http://xefejada.epizy.com/zenoxilolagilevevefu.pdfIn PDF document text
    • https://s3.amazonaws.com/mipeboro/who_gmp_guidelines_for_pharmaceuticals.pdfIn PDF document text
    • https://s3.amazonaws.com/voropa/english_bulldog_breeding_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/setikizo/which_chapter_of_bhagavad_gita_is_the_best.pdfIn PDF document text
    • https://s3.amazonaws.com/mijumomub/jugazelitolijuruk.pdfIn PDF document text
    • https://s3.amazonaws.com/tabobujimo/27778603004.pdfIn PDF document text
    • https://s3.amazonaws.com/megulu/birkenstock_arizona_platform_metallic_copper.pdfIn PDF document text
    • https://s3.amazonaws.com/sezewu/vizagavuverisifad.pdfIn PDF document text
    • https://s3.amazonaws.com/babetafaperaxov/groove_essentials_1.0.pdfIn PDF document text
    • https://s3.amazonaws.com/xofalepelala/laminate_sheets_for_paper.pdfIn PDF document text
    • http://mukadepokexow.epizy.com/how_do_i_find_my_three_star_signs.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_off00013680.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x13680 5236 bytes
SHA-256: 1d3c6aa43616eb3ce445e524b3808f697f230b901c114bf832be29989c81cfc7
font_01_sfnt_off00014845.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14845 11532 bytes
SHA-256: 68c0203a7ac3abe340b6a28a0bd64f60f7b65203fa668877c9b7ed1c244ed6dd

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