Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ce734cbe9178e54…

MALICIOUS

PDF

72.8 KB Created: 2021-02-10 06:06:16 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 2c67b3ec303522b8c81b7a15874093ce SHA-1: 0608c4d81ad921b93643c86eb02a6471e75bfd08 SHA-256: 0ce734cbe9178e54ae10074c3174595de282bfa212ac73b1f531a9c73c3c3db0
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://jacksth.ru/wb?keyword=sumerian%20cuneiform%20tattoo PDF link annotation
    • https://vamekatowozi.weebly.com/uploads/1/3/0/8/130814347/e2e8c51a046021.pdfIn PDF document text
    • https://cdn.sqhk.co/mivijigonof/el1RJ0q/pinball_fx_2_free_download_for_windows_8.pdfIn PDF document text
    • https://toredakiwireg.weebly.com/uploads/1/3/0/7/130739366/4062404.pdfIn PDF document text
    • https://verumoxozuvije.weebly.com/uploads/1/3/1/4/131407377/666468.pdfIn PDF document text
    • https://xikunozazoteta.weebly.com/uploads/1/3/1/4/131453294/vexodurabizaj_donezejidug_puvaziti_jewevuninifiwa.pdfIn PDF document text
    • https://cdn.sqhk.co/lenawemijixe/jihegcJ/39211876691.pdfIn PDF document text
    • https://cdn.sqhk.co/vakamuzawa/SOlVO8i/super_spider_archer_stickman_bow.pdfIn PDF document text
    • https://diveziriluro.weebly.com/uploads/1/3/4/4/134447321/jajigotozem-wizakozixuguk.pdfIn PDF document text
    • https://mozeduxazos.weebly.com/uploads/1/3/4/0/134018133/0d9f501d69c135a.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/rufonali/nabidofelolotadaj.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/functions_of_management.pdfIn PDF document text
    • https://s3.amazonaws.com/jasipefulaxiduj/best_free_reader_windows_2018.pdfIn PDF document text
    • https://s3.amazonaws.com/gavobawum/thomas_calculus_early_transcendentals_14th.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezodepugov/bopivekagi.pdfIn PDF document text
    • https://s3.amazonaws.com/wokesabisevo/12786577742.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_off0000dde6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDDE6 4920 bytes
SHA-256: 4ccd48a7a2268f5e4783b4111dfa7099feb66beda39565657d63f07ccbf69bc9
font_01_sfnt_off0000ee8c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE8C 11812 bytes
SHA-256: e0ae3a5e7343da86e0370c7f55f58d5076d876f665e94998abd613ba21a30945

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