Malicious PDF — malware analysis report

Static analysis result for SHA-256 4b179d463a05314f…

MALICIOUS

PDF

72.8 KB Created: 2021-02-24 11:01:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: b7bcee869050440bec1f97467e2f16b6 SHA-1: 3c5918dd715cb21f36389fa933a6c7258b5f0b05 SHA-256: 4b179d463a05314f9676286525f88e1c6f0ea6133f319852c8fe844735c28465
202 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 8

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://jottigo.ru/wix?keyword=permanent+makeup+training+manual+pdf PDF link annotation
    • https://zovafizi.weebly.com/uploads/1/3/0/8/130874114/ximeroso-kawesugona.pdfIn PDF document text
    • https://cdn.sqhk.co/gubujurit/hgicnie/55215466173.pdfIn PDF document text
    • https://cdn.sqhk.co/gutemokerezo/jcpWmYh/dubamolizomoxiwav.pdfIn PDF document text
    • http://xsale.trade/rails_active_storage_previewro6sf.pdfIn PDF document text
    • http://qqkaxes.xyz/kazokx8oyd.pdfIn PDF document text
    • http://helplnstagramcontact6088758.com/70644341117rncox.pdfIn PDF document text
    • http://taher-tcac.com/how_do_i_fix_my_wine_enthusiast_coolerd73wr.pdfIn PDF document text
    • https://cdn.sqhk.co/jeforije/fIa3f16/jifukijowozepok.pdfIn PDF document text
    • http://amaryllis.space/98377607277evjk1.pdfIn PDF document text
    • https://cdn.sqhk.co/jigugabopu/iLgjji6/t-_mobile_money_debit_card.pdfIn PDF document text
    • https://ninuxegomozul.weebly.com/uploads/1/3/1/8/131871835/bejexa.pdfIn PDF document text
    • https://cdn.sqhk.co/pumibavi/hfBaggL/58841055204.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4412181/normal_5ff0874544194.pdfIn PDF document text
    • http://guitar.su/kometuluvojexiptck3.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/kizugokofo/dallas_stars_twitter_reporter.pdfIn PDF document text
    • https://s3.amazonaws.com/fupanabivote/fm_whatsapp_new_version_app.pdfIn PDF document text
    • https://s3.amazonaws.com/paropabaru/cameo_candy_free.pdfIn PDF document text
    • https://s3.amazonaws.com/woberiz/7585643174.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_off0000decc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDECC 5248 bytes
SHA-256: 08aafd132ea073b69b3775ef1bcd584bc8bca713c04498ff348579136b27b73e
font_01_sfnt_off0000f093.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF093 10968 bytes
SHA-256: 0ca5b3bbd4c58fdc81eeba071e05faed4134685b7edd22d81902046b3bff1600