Malicious PDF — malware analysis report

Static analysis result for SHA-256 a569f95c80a7fadf…

MALICIOUS

PDF

78.0 KB Created: 2021-02-26 06:12:03 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: d9f00ec62f0002a7ce6e94a04ad2e31e SHA-1: 0debcd39cc60b6f402174243778f3f62db3e28e9 SHA-256: a569f95c80a7fadfe6ca5e6fce98c541676d31e48500d3ac8429e1e398ec3c6c
214 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • PRC/3D content in PDF medium CVE related PDF_PRC_3D
    PDF contains PRC 3D content. PRC/U3D parsers have been a recurring Adobe Reader attack surface; treat as a related parser-exploit indicator rather than a specific CVE match.
  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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.
  • 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://yafferge.ru/aws?utm_term=smart+goal+setting+worksheet+for+students In PDF document text
    • http://fukerijinexin.mygamesonline.org/46756751324.pdfIn PDF document text
    • http://lamaded.mywebcommunity.org/al_quran_app.pdfIn PDF document text
    • http://talkme-news.info/genewuvugofe7utst.pdfIn PDF document text
    • http://top-agent.ru/gusonoxifegubanekump8l0x.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471988/normal_5fd268143c13c.pdfIn PDF document text
    • https://cdn.sqhk.co/dewavasese/a0fAeKl/39472640700.pdfIn PDF document text
    • http://magazinrf.xyz/the_secret_law_of_attraction_summaryp1zz3.pdfIn PDF document text
    • https://cdn.sqhk.co/kufiremikaf/ggifdhi/soccer_heads_world_cup_cool_math_games.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413707/normal_5ff6b9fa1e0d5.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368770/normal_5fe4019a7aead.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/wopari/35021894538.pdfIn PDF document text
    • https://s3.amazonaws.com/roxawo/dreamweaver_for_php_development_free.pdfIn PDF document text
    • https://s3.amazonaws.com/baxunaf/acas_guide_to_disciplinary_and_grievance_procedures.pdfIn PDF document text
    • http://miganuvag.myartsonline.com/how_do_you_fix_a_generator_that_will_not_produce_electricity.pdfIn PDF document text
    • https://s3.amazonaws.com/gomaxod/5th_grade_math_worksheets_division.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_off0000f37f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF37F 5580 bytes
SHA-256: 0e81f41572021e245bfc1de5f409a669df8e37403847703a10de9ed65bfd1e87
font_01_sfnt_off00010659.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10659 10728 bytes
SHA-256: 55675bcf93b7bfffaf823c4fc6b7c04f2b01a6a3aea3b5296ead621cf48ba1fd

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