Malicious PDF — malware analysis report

Static analysis result for SHA-256 643b9f6828a9f689…

MALICIOUS

PDF

66.9 KB Created: 2021-03-03 17:30:07 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: c6ebbf0282e01cf5cb7a73082df5def1 SHA-1: da6da4511d3c04a8839bd37e9f692574fda72cdf SHA-256: 643b9f6828a9f689e7d515a857d9a5ddee0faeed0387b1c3c0820a0852c6bb88
126 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
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://xajibur.ru/award?keyword=directions+to+our+lady+of+the+lake+hospital+baton+rouge+louisiana PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4403270/normal_5fee84208e452.pdfIn PDF document text
    • https://cdn.sqhk.co/pozigafo/qFU2geF/minecraft_world_editor_pocket_edition.pdfIn PDF document text
    • https://cdn.sqhk.co/tivuzofep/X3hoieP/widoguzakutomumej.pdfIn PDF document text
    • https://cdn.sqhk.co/mivufarowiwi/o2zeggr/wish_list_app.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465012/normal_60049c534fcc3.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366676/normal_5fdfd4845ef13.pdfIn PDF document text
    • http://vekisonoloze.sportsontheweb.net/zisijosujomosupuboga.pdfIn PDF document text
    • http://zupurowuzuxule.iblogger.org/jivojulidavizepijowawalo.pdfIn PDF document text
    • http://zememor.sportsontheweb.net/88272851724.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://pinamagowejut.epizy.com/call_report_instructions_ffiec.pdfIn PDF document text
    • https://s3.amazonaws.com/wufujudisu/magisterium_book_5_free.pdfIn PDF document text
    • https://s3.amazonaws.com/mexijegedakol/way_back_home_piano_sheet_hard.pdfIn PDF document text
    • http://lawaxisagiwog.atwebpages.com/24990750240.pdfIn PDF document text
    • http://lirolodo.rf.gd/26846243298.pdfIn PDF document text
    • https://s3.amazonaws.com/muwemivumazulax/fuxisaworawosibo.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_off0000c854.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC854 5720 bytes
SHA-256: c2c6e186936f9f7eceaff687c5a0843e917c9b31c150e9088ed740c578718ed5
font_01_sfnt_off0000dbd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBD5 10152 bytes
SHA-256: 13d117c329b6ef1a54fbfc0459cae2b2d41ef3ecdcc9368e883ed794dd7330f2