Malicious PDF — malware analysis report

Static analysis result for SHA-256 5c14a80886d4de46…

MALICIOUS

PDF

69.3 KB Created: 2021-02-26 12:43:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 3b13b8862e820da8b193fad01cd6185e SHA-1: f4314d5828fba4502456b101d3d681d9bb223ac8 SHA-256: 5c14a80886d4de46f0f80eb8a78c6d4e7074e27a3f93f7260ca8033b700676c7
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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 https://jumiwimov.ru/wix?keyword=study+guide+for+medical-surgical+nursing+8th+edition+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4389603/normal_5ff716ff6a397.pdfIn PDF document text
    • http://ro-shop.space/free_letterhead_stationery_templatesunk8r.pdfIn PDF document text
    • http://boforotaje.mywebcommunity.org/metaweparulotexanopome.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454042/normal_6016fbd8dbd80.pdfIn PDF document text
    • http://nesobaka3.xyz/5433642188usdor.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4416513/normal_6010c649a2911.pdfIn PDF document text
    • http://littlenat.space/57786747821kvv8q.pdfIn PDF document text
    • http://junumidutuzakox.getenjoyment.net/71305868070.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4462354/normal_5ff2dbc677cc4.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/bejexe/xibasasufopikefodono.pdfIn PDF document text
    • https://s3.amazonaws.com/tobovunoberiki/17027445047.pdfIn PDF document text
    • https://s3.amazonaws.com/rutufokedizon/81715994300.pdfIn PDF document text
    • https://s3.amazonaws.com/xamibudasagas/wonopelukanitekil.pdfIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/putametuwugezejapowo.pdfIn PDF document text
    • https://s3.amazonaws.com/kagedatabujo/math_worksheets_grade_4.pdfIn PDF document text
    • https://s3.amazonaws.com/zinudipir/80177528804.pdfIn PDF document text
    • https://s3.amazonaws.com/kizugokofo/58659507862.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_off0000ce34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCE34 6000 bytes
SHA-256: da94024b376666f769be1fdc8bc3595468668d096d15b0c9125fffb2e4c5ad2a
font_01_sfnt_off0000e283.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE283 10448 bytes
SHA-256: ddeedf340a90ea0b9592ca621a7169a3e0039477d784ffff9a37b4e6652f2696