Malicious PDF — malware analysis report

Static analysis result for SHA-256 599340b3d9fec089…

MALICIOUS

PDF

71.1 KB Created: 2021-02-16 03:17:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: fe13a9b15e35efa3927d2daac9e48bca SHA-1: f5b0fea2504a381b08ed1ec73d21f66b31af13d5 SHA-256: 599340b3d9fec08943f51d15d0a1422d8273b60e8ff93092af51b1409c965b6e
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://druttle.ru/wb?keyword=american%20red%20cross%20volunteer PDF link annotation
    • https://cdn.sqhk.co/besogevipadi/ijdihXJ/98608541512.pdfIn PDF document text
    • http://wuwisometojone.66ghz.com/english_grammar_worksheets_grade_1.pdfIn PDF document text
    • http://pikaromabunoteb.iblogger.org/6474754032.pdfIn PDF document text
    • https://cdn.sqhk.co/tibakekavero/dRHSjc7/65725923073.pdfIn PDF document text
    • http://ogranicbio.space/918182733110keio.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4415052/normal_5fde4157b79b2.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/rovuweraja/tukaferewesodupu.pdfIn PDF document text
    • https://s3.amazonaws.com/zerejibixupav/zagunukot.pdfIn PDF document text
    • https://s3.amazonaws.com/pewibim/80551466002.pdfIn PDF document text
    • https://s3.amazonaws.com/xirixepo/uspstf_guidelines_breast_cancer_screening.pdfIn PDF document text
    • https://s3.amazonaws.com/doxifuba/nuxatizumasodosotezudazur.pdfIn PDF document text
    • http://vukotirigepiv.epizy.com/97509738674.pdfIn PDF document text
    • http://munoxefarofow.rf.gd/26445137832.pdfIn PDF document text
    • https://s3.amazonaws.com/zuponefi/14872562237.pdfIn PDF document text
    • https://s3.amazonaws.com/zusevamasor/buffering_accelerator_software.pdfIn PDF document text
    • http://xexopixubogupul.epizy.com/beach_buggy_unlimited_mod_apk.pdfIn PDF document text
    • https://s3.amazonaws.com/lovetijif/mobile_battery_charging_apps.pdfIn PDF document text
    • https://s3.amazonaws.com/dezajok/whistleblower_complaint_npr.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_off0000d957.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD957 5136 bytes
SHA-256: 01693b0d373e13e212a4713fbe58700dd9d7fa19974f69846acab9c1cacc5dd9
font_01_sfnt_off0000eabb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEABB 10896 bytes
SHA-256: d170f1f234a73254a583ae041b37ad3b879d882d21bffc20a3a5aeea8794891f