Malicious PDF — malware analysis report

Static analysis result for SHA-256 85e898208a6dc666…

MALICIOUS

PDF

69.7 KB Created: 2021-02-22 19:45:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 6856cdb8044c9040e7130d869d4de785 SHA-1: e57ecc5b03ad57a80c7e7c3e6a933f171c97a2e5 SHA-256: 85e898208a6dc6661fa6d898f646f1bdaf956639f2e36e701145ee31ddcb3a78
226 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=shaw+library+printing PDF link annotation
    • https://cdn.sqhk.co/volumusigu/eFijJif/youtube_premium_plans_uk.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414514/normal_602097298ce78.pdfIn PDF document text
    • https://cdn.sqhk.co/baruduwege/iegigex/hitman_movie_list_imdb.pdfIn PDF document text
    • https://betewobinolatid.weebly.com/uploads/1/3/4/7/134756009/bisokilit.pdfIn PDF document text
    • https://zerakilun.weebly.com/uploads/1/3/2/6/132695460/bapajip.pdfIn PDF document text
    • https://buparemekixa.weebly.com/uploads/1/3/0/7/130739227/9784792.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4418762/normal_601391a00b95a.pdfIn PDF document text
    • https://donedujawag.weebly.com/uploads/1/3/4/3/134315137/17de150122.pdfIn PDF document text
    • https://legorigerelok.weebly.com/uploads/1/3/6/0/136056749/1861359.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4453528/normal_5fc649bce4503.pdfIn PDF document text
    • https://cdn.sqhk.co/durotula/jh1Elhe/37131756655.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/veraxawewib/basics_of_accounting_and_finance.pdfIn PDF document text
    • https://s3.amazonaws.com/viwoxuz/how_to_affy_package_in_r.pdfIn PDF document text
    • https://s3.amazonaws.com/mupukesunobaga/antologia_de_cuentos_de_terror.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_off0000d269.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD269 5340 bytes
SHA-256: 0968442bb47dacd246b47799015d4727679d5a56fcdce2959983c395bd5d32d7
font_01_sfnt_off0000e4a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE4A7 10968 bytes
SHA-256: 6d65fc1c46e435c2e6c61141e480e8778da9c4268bfdc549facca11a1174fa34

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