Malicious PDF — malware analysis report

Static analysis result for SHA-256 0ed33efd8b47f2d6…

MALICIOUS

PDF

72.4 KB Created: 2021-02-22 18:29:40 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 43ec058ff6a3aa643ec3df25a777b131 SHA-1: 33c2d1d6e1a08c2f4cedf7f006e4594c5ef4adec SHA-256: 0ed33efd8b47f2d67e94756546f890caaa5b180da56d4fb38ce15b361f58489b
256 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
  • 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.
  • Brand-impersonation credential phishing lure critical SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: action link to abused redirector https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/wajatoza.pdf.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • 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://baarspo.ru/wix?keyword=the+treaty+of+versailles+worksheet+answer+key PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4465703/normal_5fffaf3903021.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4444357/normal_60222216c83ff.pdfIn PDF document text
    • https://cdn.sqhk.co/notenirikev/d5fjhgd/yellow_lightsaber_rey.pdfIn PDF document text
    • https://fiwerabonu.weebly.com/uploads/1/3/4/3/134347662/wajatoza.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4465398/normal_5fc771f618daf.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/fukezavazuj/31096265552.pdfIn PDF document text
    • https://s3.amazonaws.com/xetasif/firstwrap_authorised_representative_form.pdfIn PDF document text
    • https://s3.amazonaws.com/widuxade/85471738530.pdfIn PDF document text
    • https://s3.amazonaws.com/kewakuko/yahoo_finance_data_in_r.pdfIn PDF document text
    • https://s3.amazonaws.com/wurivuve/48784882161.pdfIn PDF document text
    • https://s3.amazonaws.com/xunilukegez/cornwall_ny_police_reports.pdfIn PDF document text
    • https://s3.amazonaws.com/nuselufuzo/35085584993.pdfIn PDF document text
    • https://s3.amazonaws.com/zeworibuzoza/futur_simple_french_worksheets.pdfIn PDF document text
    • https://s3.amazonaws.com/jeworurowam/instagram_apk_old_version_2017.pdfIn PDF document text
    • https://s3.amazonaws.com/petuzutemixuvod/making_meaning_of_metaphors_classic_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/subopukomanaw/australian_super_balanced_performance_ytd.pdfIn PDF document text
    • https://s3.amazonaws.com/jitimesolagun/jebinozika.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_off0000def7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF7 5124 bytes
SHA-256: 8ebfa05ea79eebf5aa43d973febfe11f8c9db1da4f3702ba538d5850e5e2a8bd
font_01_sfnt_off0000f079.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF079 10412 bytes
SHA-256: 0328516fab690369f3acfc202c4e357be93479389371e6e027613cf81b82fc64