Malicious PDF — malware analysis report

Static analysis result for SHA-256 476325cf24aca8a0…

MALICIOUS

PDF

81.8 KB Created: 2021-01-29 20:57:33 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 57fa5f1b2a0234019406251d958f5967 SHA-1: 861fad96f0674116517bc620ac9a0801721e2b60 SHA-256: 476325cf24aca8a09ac50191cc3d1989b94e7446de9dab0f6a20a6231bae0fed
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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 http://yesnutural.space/wiwokanifeloposawizochvcj.pdf In PDF document text
    • http://cardioactiveitalia.site/kujopizomatejadibaxopolicd9t8.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4407102/normal_6003a516320a8.pdfIn PDF document text
    • https://cdn.sqhk.co/kezulegol/Jjgjbls/votusuxoneninolovejed.pdfIn PDF document text
    • https://cdn.sqhk.co/jilazelitor/Djajchf/barewoxadoweluk.pdfIn PDF document text
    • https://cdn.sqhk.co/jonilinenuvo/yjhZrgU/48748459365.pdfIn PDF document text
    • http://topmassage.net/zudapulqzsy.pdfIn PDF document text
    • https://cdn.sqhk.co/xizaxulubezu/UIbjfHu/zombie_birthday_party_food_ideas.pdfIn PDF document text
    • https://cdn.sqhk.co/fopujetoros/WXnM6yX/fepanunuvodep.pdfIn PDF document text
    • https://cdn.sqhk.co/ferudati/nhchfii/baby_boy_red_patent_shoes.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4455381/normal_5fdc500fddc2c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4485322/normal_5fd1cfd3988a8.pdfIn PDF document text
    • https://cdn.sqhk.co/gobajejuz/ghFiejc/captions_for_infinity_pool_pictures.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460706/normal_5ff140f516b62.pdfIn PDF document text
    • https://cdn.sqhk.co/jokalirubore/bggivij/battles_of_the_american_civil_war_1863.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4482207/normal_6003b8ef08b7a.pdfIn PDF document text
    • https://cdn.sqhk.co/vekokoze/gehjgOk/jagipede.pdfIn PDF document text
    • http://feedbacrnz.space/zadirudesixorowi9d5n.pdfIn PDF document text
    • https://trafftec.ru/wb?keyword=invaders%20from%20marsPDF link annotation
    • https://trafftec.ru/wb?keyword=invaders%20from%20mars(%201986%20filmIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off00010089.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10089 5760 bytes
SHA-256: 889ea9de9d46d3d8a04875131e6d4346fb9fb535f80b58fe342c308c574ebaf9
font_01_sfnt_off00011425.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11425 11172 bytes
SHA-256: ae278d99c82002e18d238a4141e2f34104a0b5c4b860f52149c6b0c36c10a343