Malicious PDF — malware analysis report

Static analysis result for SHA-256 2b682f18896bc7a4…

MALICIOUS

PDF

45.5 KB Created: 2020-10-27 23:13:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 4c7349bbd276a4c39d0bf1c519d933bf SHA-1: 1468a71350f2e19955971f93755864883f303d36 SHA-256: 2b682f18896bc7a4b6345a2ba0f288c91371080ede0f7e9063767b59b0ae5b1b
94 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 3

  • 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.
  • 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://ttraff.link/123?keyword=the+valley+of+fear+summary+act+1+scene+2 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369524/normal_5f8bef674d30c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f8bcae44ac5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374956/normal_5f8efefbb2663.pdfIn PDF document text
    • https://zoxaminajoge.weebly.com/uploads/1/3/1/6/131637873/26725a8e.pdfIn PDF document text
    • https://wojeribexojuxu.weebly.com/uploads/1/3/1/8/131856158/futagofibavurexiwoli.pdfIn PDF document text
    • https://fulipevaxavu.weebly.com/uploads/1/3/2/6/132695351/afc53.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0463/3319/8498/files/16613788181.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7005972-19a6-471f-934d-65a75e3665e1/viwetaxodogigunowokosaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/068f8499-d190-4015-b731-cfe6cf743d4c/fomokejirekajapevus.pdfIn PDF document text
    • https://s3.amazonaws.com/bulozor/addiction_disease_model.pdfIn PDF document text
    • https://s3.amazonaws.com/wonoti/marketing_consultant_agreement.pdfIn PDF document text
    • https://s3.amazonaws.com/purawuma/toyota_alphard_user_manual.pdfIn PDF document text
    • https://s3.amazonaws.com/tadovu/el_alcoholismo_en_jovenes.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/prescriptive_analytics.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_off000073dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x73DC 5416 bytes
SHA-256: 9237757afefed1c059af684594da14ada7f7dd8f64a61c1a3322c87aec5b5a4c
font_01_sfnt_off00008640.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8640 10176 bytes
SHA-256: 9e0f6088aeb6bdf11b27eada4f2487db4ffbeb9ddeb88025df7352ddfb94ac48