Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f62e5b71ba94010…

MALICIOUS

PDF

70.2 KB Created: 2021-02-28 08:57:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: f6783dc06ca5c8872d888a1d92d51aeb SHA-1: 803e7e2420cd6a890bf094f67f16399c0ca4081e SHA-256: 3f62e5b71ba9401028c40596e05fd64dc971cb28282d331bf1bc4b52fe600cdc
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://jacksth.ru/award?keyword=cara+setting+tp-link+universal+wifi+range+extender+tl-wa850re PDF link annotation
    • https://cdn.sqhk.co/toxinize/eG0rjik/22173269559.pdfIn PDF document text
    • http://wow50.pro/bolanawowajoxupimuvojakodcvzmq.pdfIn PDF document text
    • https://cdn.sqhk.co/widafopaj/ihJftij/universal_remote_control_for_samsung_smart_tv.pdfIn PDF document text
    • http://mscgis.net/2413202113703dnx.pdfIn PDF document text
    • https://cdn.sqhk.co/miburixegapu/DigbAih/sekiwanawojepututizo.pdfIn PDF document text
    • http://getinugalukef.iblogger.org/sports_tv_guide_portugal.pdfIn PDF document text
    • http://supernefritroller.xyz/bofezorilavaluverol7mr.pdfIn PDF document text
    • http://nowukusox.mypressonline.com/8282489918.pdfIn PDF document text
    • https://xezelugewopisaw.weebly.com/uploads/1/3/5/3/135311865/nevunikititedixefeg.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/buwosevax/baylor_football_uniforms_history.pdfIn PDF document text
    • http://sejojoxo.epizy.com/daily_cash_register_count_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/purixifusipelid/31815600473.pdfIn PDF document text
    • http://zalolod.epizy.com/blackberry_playbook_os_2._1_link.pdfIn PDF document text
    • http://pususarejopo.epizy.com/wojegotubema.pdfIn PDF document text
    • http://vawerudarasikow.myartsonline.com/cyberpower_1500_avr_battery_backup.pdfIn PDF document text
    • http://malajusojak.epizy.com/freenas_ftp_setup_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/jolozidabi/takekopoda.pdfIn PDF document text
    • http://girofili.myartsonline.com/how_to_configure_netgear_wgr614_wifi_router.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_off0000d3f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD3F6 5888 bytes
SHA-256: dcef4dec7283ee128f655e13deb4bd9df4a74747ce62e03455a6c56e5dac1404
font_01_sfnt_off0000e834.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE834 10188 bytes
SHA-256: dde2bb2aef48b1ae564985aa6067841e2b9be84e64540fdfcfc21b57892df7c0