Malicious PDF — malware analysis report

Static analysis result for SHA-256 4cb084d76a377d20…

MALICIOUS

PDF

81.4 KB Created: 2021-02-22 18:47:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 9322f4cff439d595cb86f7a341d73cb1 SHA-1: 860e4362d3ec5865609fcf3dbda93078dbacdfe3 SHA-256: 4cb084d76a377d20dee74617968ec9bf9ca181e5fefa5d3711c79db0e63a0d36
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://bologen.ru/wb?keyword=big%20nate%20comics%20wiki PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416490/normal_5fce6cc02c9ba.pdfIn PDF document text
    • http://damvglaz6.xyz/team_lebron_vs_team_giannisxwhhc.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4481058/normal_5feb8ae0e5faf.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4403938/normal_5ffe983679913.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4376101/normal_6001f7859a290.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4367621/normal_5feec0a0285f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4483103/normal_5fd85a962af5a.pdfIn PDF document text
    • http://getegenufiduso.66ghz.com/mbti_personality_test.pdfIn PDF document text
    • http://copyrightsupporteds.com/glitch_template_after_effects_freeuz0ty.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/lomuper/adverbial_phrase_worksheet_y6.pdfIn PDF document text
    • https://s3.amazonaws.com/mibiwivanetuj/assemblies_of_god_logo_free.pdfIn PDF document text
    • https://s3.amazonaws.com/lizuseguwix/levufaliwoxupogodugukek.pdfIn PDF document text
    • https://s3.amazonaws.com/jevelel/pedizope.pdfIn PDF document text
    • https://s3.amazonaws.com/suxuzubojut/pilugevasewapebe.pdfIn PDF document text
    • https://s3.amazonaws.com/pazatuv/manefaxezadizej.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_off00010313.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10313 5196 bytes
SHA-256: 11fa13a63517e0191f6612bd5c1171c77c4699e913a925b8ce94c19fd10e6b61
font_01_sfnt_off000114d0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x114D0 10684 bytes
SHA-256: 37a0bd8cbea4b1b8d22bf0b0c21d6ed01e2dd5a4f20177ca61ee669e1053efd0