Malicious PDF — malware analysis report

Static analysis result for SHA-256 3ace1a5d3e5eb38e…

MALICIOUS

PDF

63.9 KB Created: 2021-03-14 07:02:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 6e9acb830294e7926994d558ddab4857 SHA-1: 76c54fc838c8ee25b392eb0b6ad00266929dd85d SHA-256: 3ace1a5d3e5eb38e6c6e242f5370dfdd9ff689eba27f982762048ae935f66caf
196 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
  • 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.
  • 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://soxebez.ru/award?keyword=benward+music+theory+book+pdf PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4379032/normal_5fe047e22e24c.pdfIn PDF document text
    • http://xikupolabije.22web.org/12862963335.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420939/normal_600c46d25032c.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366348/normal_5ff3499610068.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455657/normal_5fe291c123c61.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4497695/normal_60392b458ec48.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4379217/normal_5ff1f28fe5314.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4425230/normal_60140aec28f3d.pdfIn PDF document text
    • http://lozebakumod.22web.org/85161371142.pdfIn PDF document text
    • http://tetiviguxawik.getenjoyment.net/platonism_and_anti_platonism_in_mathematics.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://d451e762-8e00-4155-9971-9512d28d2528.filesusr.com/ugd/b52961_582a19c6f6184bc7b126833dda1fd676.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/0972a9ca-0b25-4d5b-974e-f722b026e0eb/punitaxesibiwuralubevivij.pdfIn PDF document text
    • http://tivapatovike.epizy.com/google_report_phishing_email_address.pdfIn PDF document text
    • http://dogiwexor.myartsonline.com/burovit.pdfIn PDF document text
    • https://1639490a-f715-481e-9fb1-af38d332269b.filesusr.com/ugd/a59130_25734d728ec34c3e98d22723b78c6d17.pdf?index=trueIn PDF document text
    • https://11f44e1d-c86f-4be6-baa1-90970e7c24f5.filesusr.com/ugd/a298ce_6a6f72e26f984aeb85e5bf71325aec2f.pdf?index=trueIn PDF document text
    • https://uploads.strikinglycdn.com/files/39ed1fcf-ac43-4609-a48b-ea8063506d76/kumiganodidenitile.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_off0000bce5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBCE5 5808 bytes
SHA-256: 32ca5bdcf610a278c7b3d55fd7d8e618faa1e42c2e5d36556e73af63429b2623
font_01_sfnt_off0000d09c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD09C 9944 bytes
SHA-256: e7e31b9cf19d5f5fcce0ff973d71485297674cb28f1cb1dd8aa04f1ac0d1ccf8

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