Malicious PDF — malware analysis report

Static analysis result for SHA-256 5ead9c9d16449f5a…

MALICIOUS

PDF

70.4 KB Created: 2021-02-27 14:12:18 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: cda98d2266d2a762ac2815536cc55e11 SHA-1: 2ae6be02c5f16a776178f8dce252f4c5c93bf538 SHA-256: 5ead9c9d16449f5adc19c7fe7522e5350c4ed9621033f9959661bffc0762a2f8
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://druttle.ru/award?keyword=in+the+heights PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403270/normal_5ffe0eabeb5f5.pdfIn PDF document text
    • https://xigakoter.weebly.com/uploads/1/3/1/3/131379919/f2b4c32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4408991/normal_6026c55b84896.pdfIn PDF document text
    • https://wanovupejofo.weebly.com/uploads/1/3/4/5/134580977/jonitatifuwiga_baguzasugak_misedugisapuge_gamozitoj.pdfIn PDF document text
    • https://jepiweluzobadur.weebly.com/uploads/1/3/5/3/135300479/7442948.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/voropa/validation_master_plan_template.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/kipiva.pdfIn PDF document text
    • https://s3.amazonaws.com/watajive/jolly_phonics_letter_r_worksheet.pdfIn PDF document text
    • https://s3.amazonaws.com/regegozumekoza/34182622448.pdfIn PDF document text
    • https://s3.amazonaws.com/jonora/alto_saxophone_chromatic_scale.pdfIn PDF document text
    • https://s3.amazonaws.com/xopugup/mercruiser_5.7_service_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/wegugus/goloxasudubinilunekug.pdfIn PDF document text
    • https://s3.amazonaws.com/pusolefosex/9794913566.pdfIn PDF document text
    • https://s3.amazonaws.com/wujapu/hotel_california_hd_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/firudegix/formatter_pl_sql_developer.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_off0000dad0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDAD0 4544 bytes
SHA-256: 89192df389ef3d716f4dcd0e7be195e201b57757c64d6830d1c3de81ea845d62
font_01_sfnt_off0000ea4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA4E 10208 bytes
SHA-256: f7ec8925f96c5dc5590f5091b10cb839cffc3c3c28ad66a9d87eff2a6719a37a