Malicious PDF — malware analysis report

Static analysis result for SHA-256 6629c91661cfc1a2…

MALICIOUS

PDF

64.3 KB Created: 2021-02-14 10:09:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f0824de16b428950279321e51629f841 SHA-1: 5dc7fe503fe701975a881ddebce8a2b82dc60ace SHA-256: 6629c91661cfc1a2d01c69faa97ec718122b780ccedf734e3d81f39b29bacacc
166 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Payment redirection / bank-detail change lure high SE_PAYMENT_REDIRECT_LURE
    Document describes new or changed bank, wire, ACH, IBAN, SWIFT, or routing instructions — a high-value business-email-compromise 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.
  • 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/wix?keyword=dr+joseph+bellflower PDF link annotation
    • http://kusawib.iblogger.org/dedupodaginebuwi.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443595/normal_60002f045136d.pdfIn PDF document text
    • http://gifawel.22web.org/47746514087.pdfIn PDF document text
    • http://kdghy.online/assets_and_liabilities_sheet_format8afgl.pdfIn PDF document text
    • http://mirror-x.org/10541360237ocm5p.pdfIn PDF document text
    • http://lasabobobatir.22web.org/blackberry_mobile_tones.pdfIn PDF document text
    • https://bugebapujeze.weebly.com/uploads/1/3/1/6/131606260/kijuk_femuz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4491969/normal_60206fa535a4d.pdfIn PDF document text
    • http://vabakavolageni.22web.org/netbeans_java_web_application_plugin.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410722/normal_6009b9ff5d156.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://malinaliwul.epizy.com/appdynamics_javaagent_jar.pdfIn PDF document text
    • http://mofibukuzoke.rf.gd/1600714633.pdfIn PDF document text
    • http://pefafimu.rf.gd/best_android_phone_under_15000_december_2018.pdfIn PDF document text
    • http://fobupozomorefiw.epizy.com/sugel.pdfIn PDF document text
    • http://lijazujarakowom.epizy.com/93677973908.pdfIn PDF document text
    • http://kajurilin.rf.gd/59223595969.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_off0000c01b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC01B 5084 bytes
SHA-256: 149b800dd3fdfce2aba7ce6548dd2e6921e9aba1d309ab304f55be46293ff86e
font_01_sfnt_off0000d179.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD179 10136 bytes
SHA-256: 76cd4a19d9c1d2e4ff490ff8eac8458129a18435c4d5933ff3bf46ff5887f430