Malicious PDF — malware analysis report

Static analysis result for SHA-256 bcd744a9d3aa89bb…

MALICIOUS

PDF

72.3 KB Created: 2021-02-20 22:06:49 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 203a7fd7e95b1f0bae8d2c8bdeffe983 SHA-1: 4c1d8a297af7fd58a19af67d361d1c88509b38b1 SHA-256: bcd744a9d3aa89bbceeb22f85d554ae3fdf87e064b69fa140b46659f36e461b4
264 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.
  • 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://yafferge.ru/wix?keyword=first+security+services In PDF document text
    • https://cdn.sqhk.co/pimibopugugo/hgjrhaS/usf_business_administration_degree_requirements.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4453902/normal_601b2894ac57b.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4449187/normal_5fe298361788c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4426279/normal_5ffb66ee7e721.pdfIn PDF document text
    • https://cdn.sqhk.co/maxegugej/Aiargg6/4401858324.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4472486/normal_5ffe80ed4693d.pdfIn PDF document text
    • https://cdn.sqhk.co/jiluputumusi/7Xi5Qud/96603654393.pdfIn PDF document text
    • http://5coupon.info/73908259055dqoug.pdfIn PDF document text
    • http://pannochki-art.com/guidelines_meaning_in_bengalij5wch.pdfIn PDF document text
    • https://guxumexowe.weebly.com/uploads/1/3/3/9/133999944/4342487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4474191/normal_6022f6fb6f388.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471479/normal_6022a61542d7b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4487416/normal_600fb3578628e.pdfIn PDF document text
    • http://ru-payment.casa/nancy_friday_my_mother_myselfqjz3w.pdfIn PDF document text
    • http://indital.space/12428192828dwtrl.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://funasuruwet.epizy.com/jasper_report_table_not_displaying.pdfIn PDF document text
    • http://sozidasagekixur.epizy.com/wudifig.pdfIn PDF document text
    • http://vidojizo.rf.gd/63184808787.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_off0000dfff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFF 4668 bytes
SHA-256: ada36b338323633d3de839bf85793d1deb1fbabd7a7ba797ad3b55055199fb30
font_01_sfnt_off0000f004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF004 10540 bytes
SHA-256: 4e3155ecc9da259f0cdd3b83cdad051dc270ae248e307379dfed77360eda45e2

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