Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b73a1ea93d935fb…

MALICIOUS

PDF

66.7 KB Created: 2021-03-02 07:58:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9842e9fb8b2f537b698ac88d3774fd53 SHA-1: 24a1eda48693574f82dd5bd8a7ee7776dce3624c SHA-256: 5b73a1ea93d935fb3c93363daab07a80ca5567d3860153c52ccdbf33e13e64c4
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 https://dugedepap.ru/123?utm_term=mr+christmas+holiday+projector+with+motion PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4386347/normal_5fc5b1a9a1510.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4489596/normal_5fcd289ae6655.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4401691/normal_6013c9b809c79.pdfIn PDF document text
    • https://cdn.sqhk.co/supetuzitepi/Emwiqhh/guteravapilutezelepigalud.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403947/normal_600ec08062d99.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4450249/normal_5ff87e2f75121.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4378405/normal_6032e159c890c.pdfIn PDF document text
    • https://cdn.sqhk.co/naveropifo/bxeShgN/twisted_root_menu.pdfIn PDF document text
    • https://cdn.sqhk.co/safimowexaw/ieiihde/strategic_management_plan_apple.pdfIn PDF document text
    • https://cdn.sqhk.co/janimivaxo/idchcoT/62650796846.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/nigimul/61244030339.pdfIn PDF document text
    • https://s3.amazonaws.com/siwixomudit/8467222169.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/fodejenenileju.pdfIn PDF document text
    • https://s3.amazonaws.com/levovod/19628592242.pdfIn PDF document text
    • http://ruvedinaz.rf.gd/99394409831.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_off0000c653.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC653 5588 bytes
SHA-256: e24a08f40225d1862b276d01469e742965bebf16a57e31afae298b01ee1b70ea
font_01_sfnt_off0000d948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD948 10812 bytes
SHA-256: 1d31d7e2d483f342998465fe5cd0911f35cc03275c04cc87da5a084c11a3a3b9