Malicious PDF — malware analysis report

Static analysis result for SHA-256 44ff9f3842e01563…

MALICIOUS

PDF

82.4 KB Created: 2021-02-23 01:54:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 23cc90e4e6e6a9d9237d05de438d1833 SHA-1: 3f2f77fa64f8f63a4c8f0d94d307e2869d1122df SHA-256: 44ff9f3842e015637f279357cc3bc4e3958da8547d04f1099377fad55af43553
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://leonvi.ru/wix?keyword=discord+bot+money+system PDF link annotation
    • https://cdn.sqhk.co/nofoxanu/bjjYgEN/88889226812.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496225/normal_5fc9262e45b3d.pdfIn PDF document text
    • https://cdn.sqhk.co/jujadiziga/rnnjhhb/nazuvodozirituvur.pdfIn PDF document text
    • https://cdn.sqhk.co/vulovosovem/jfhigj5/word_master_game_online.pdfIn PDF document text
    • https://cdn.sqhk.co/malevevipali/djWhdif/97788603698.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/zamemigojat/quora_app_for_windows_10.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/data._table_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/jusagi/scag_mowers_2021.pdfIn PDF document text
    • https://s3.amazonaws.com/tixedujegibex/57595593187.pdfIn PDF document text
    • https://s3.amazonaws.com/bejenosugede/67947563918.pdfIn PDF document text
    • http://rabuxudizuxu.epizy.com/economics_grade_10_teacher_s_guide.pdfIn PDF document text
    • http://pujusojup.epizy.com/45605555315.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/rawuxepaferubusekogize.pdfIn PDF document text
    • https://s3.amazonaws.com/janodojivi/57551157261.pdfIn PDF document text
    • http://zidaposiwogo.rf.gd/acana_grasslands_feeding_guide.pdfIn PDF document text
    • http://puwomuf.rf.gd/jizazaluxumukus.pdfIn PDF document text
    • https://s3.amazonaws.com/nuxulikiwab/miwotewifabewupaxowufide.pdfIn PDF document text
    • https://s3.amazonaws.com/xarojapi/zalojasef.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_off00010803.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10803 5084 bytes
SHA-256: 7c4f484d1ede1fff3f75fd42e6c775f6b02524732c3417e64a721b9d9edcd412
font_01_sfnt_off00011942.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11942 10364 bytes
SHA-256: 1b56ff5fc6368ccada8a2cf3f527bc24ad0db2079348ec5e0083c5d4b692a675