Malicious PDF — malware analysis report

Static analysis result for SHA-256 3098450c683e6f84…

MALICIOUS

PDF

70.1 KB Created: 2021-02-27 01:40:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: ee507a205a01da45b90e5342db9eb6a1 SHA-1: 5d55e40b7e9d4d8f2b1207777fd225e892154a22 SHA-256: 3098450c683e6f8476477f3bf5c9857de5fe982266600ba2a62fc00668b4b663
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://vilenefex.ru/award?keyword=the+black+cat+reading+questions+answers PDF link annotation
    • https://cdn.sqhk.co/vipujitebiki/gdm21jh/19724752936.pdfIn PDF document text
    • https://cdn.sqhk.co/pategazikiw/ejhkWSu/gogezelitazamuvugutarada.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4448735/normal_6034415f31ec8.pdfIn PDF document text
    • http://bowuxog.iblogger.org/bu_jhansi_admit_card_2019.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/bokofapig/functional_programming_in_scala_manning.pdfIn PDF document text
    • https://s3.amazonaws.com/vuzotisenixava/kedamixokitoxepelojo.pdfIn PDF document text
    • https://s3.amazonaws.com/seriposuj/caribbean_airlines_miles_transfer_form.pdfIn PDF document text
    • http://vubalek.epizy.com/cryptogram_puzzles_with_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kakekojezutok/413244766.pdfIn PDF document text
    • https://s3.amazonaws.com/vigevot/14484191936.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/rojidebedebifezebiwesu.pdfIn PDF document text
    • http://tirodubixuvix.epizy.com/namuloziz.pdfIn PDF document text
    • https://s3.amazonaws.com/legipalofi/35287432145.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_off0000d360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD360 5572 bytes
SHA-256: e8f1c0823e8ea0f5a9071d14e8856dc498d68fb9d2c09a276a1e76ce37939bd8
font_01_sfnt_off0000e64d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE64D 11004 bytes
SHA-256: 3970b0eddb0b3040fc92fea074fad770684ac80f6be7d7ae6c70ee17c14c40eb

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