Malicious PDF — malware analysis report

Static analysis result for SHA-256 468a6670cda99877…

MALICIOUS

PDF

68.2 KB Created: 2021-02-19 07:37:02 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 25c19dc1e16fcd11e4f4e8f548bcccce SHA-1: 67b912bf8c65f5ce35d560a5e2c834c8d33855af SHA-256: 468a6670cda99877d6d5b3ba9fcd8e2afd26feab838ba94fec11af2fc4c03999
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://jottigo.ru/aws?utm_term=how+to+landscape+open+office+writer PDF link annotation
    • https://vebuxevofarina.weebly.com/uploads/1/3/4/0/134013543/tawowosigil.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4427785/normal_5fcb02287e150.pdfIn PDF document text
    • http://wirelessinfo.ru/43164368229e3kgi.pdfIn PDF document text
    • https://lurevovikofa.weebly.com/uploads/1/3/4/6/134693735/b35e6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369491/normal_5fd6c82dea6bb.pdfIn PDF document text
    • https://wunogalabapa.weebly.com/uploads/1/3/4/6/134603674/10c0590daf0da61.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4464877/normal_5fe38db167cea.pdfIn PDF document text
    • https://laxopewivizi.weebly.com/uploads/1/3/5/3/135394850/8586802.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366408/normal_5ffa795ae4d66.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393188/normal_6011984e50fb0.pdfIn PDF document text
    • https://piturerakilapes.weebly.com/uploads/1/3/0/7/130775197/9312706.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4478716/normal_6004766f3d980.pdfIn PDF document text
    • https://kazajibabagak.weebly.com/uploads/1/3/4/4/134467412/73339f928e.pdfIn PDF document text
    • https://sixikubirosepup.weebly.com/uploads/1/3/3/9/133997641/93ea86ad6fa9.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426820/normal_5ff20c06ed4ab.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/wizakokowe/dexetatupexodolitaz.pdfIn PDF document text
    • https://s3.amazonaws.com/fedufiporara/77216171795.pdfIn PDF document text
    • https://s3.amazonaws.com/tosego/angularjs_advanced_interview_questions_and_answers.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_off0000cd4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCD4C 5200 bytes
SHA-256: 5096a3734a54f60c9ecc94a4435106b9ac9d52220a5d0b93ef4796ae4c379104
font_01_sfnt_off0000df21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDF21 10980 bytes
SHA-256: 27763b4a5abd70842962b62371f66bd8d62bcd4dc89dc2dbc02f13dbfece9916