Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e045a7543d5f111…

MALICIOUS

PDF

71.5 KB Created: 2021-02-26 23:51:12 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 783c5ff9569d79f77fbf84674da35936 SHA-1: b5b62d1b844e8a5f335707a1302721fd29465b87 SHA-256: 9e045a7543d5f11185b9c733eb8d69f4a2a40f140f1f6c3d21f82e06fa772f3e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://botokaw.ru/award?keyword=policy+paradox+the+art+of+political+decision+making+3rd+edition PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4386081/normal_5fd2186133247.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383147/normal_5fe9c95e9f7ac.pdfIn PDF document text
    • http://vibusuroku.iblogger.org/exam_ref_70-411_administering_windows_server_2012_r2.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4394061/normal_5fec7cf6b1688.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4386830/normal_5fc8da74e77b8.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/tazopaju/prezi_template_search.pdfIn PDF document text
    • http://farilofisimoru.rf.gd/vexewekudinojejuru.pdfIn PDF document text
    • http://jilutuve.rf.gd/everfi_module_1_quiz_answers_quizlet.pdfIn PDF document text
    • http://gafodix.myartsonline.com/fukidumiperixezo.pdfIn PDF document text
    • https://s3.amazonaws.com/vapelurowar/usatestprep_answer_hack.pdfIn PDF document text
    • https://s3.amazonaws.com/titugome/s_corp_bylaws_template_free.pdfIn PDF document text
    • https://s3.amazonaws.com/kegubinefuda/31747670469.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_off0000d63b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD63B 5968 bytes
SHA-256: 4d02eebe4f42b417a5ce4a9637fdae3fc43a9b0aa5ab000d21a9e467a9c39bda
font_01_sfnt_off0000ea7a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEA7A 10512 bytes
SHA-256: f8e7ba7958cfbbfaa50cf72fc121ccd90771b76bd212008ecd0861c4427911ad