Malicious PDF — malware analysis report

Static analysis result for SHA-256 6be1700089a9e7ff…

MALICIOUS

PDF

43.6 KB Created: 2020-11-02 06:59:44 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8f8e7bae35b8f89a8e6e34913e4d3eee SHA-1: 1781ac46fd29e5d5e3dcfcd822b7cdf30917b99f SHA-256: 6be1700089a9e7ff2bda983ba2c81f42dc15015c82c2cc56a9c35c49e8dcd16c
102 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document was flagged as malicious by an ML classifier. It uses an invoice-themed lure. 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 4

  • 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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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://ggtraff.ru/strik?keyword=quickbooks+credit+memos+for+overpayment In PDF document text
    • https://xesaranit.weebly.com/uploads/1/3/2/6/132696194/5622401.pdfIn PDF document text
    • https://votawaxamudogop.weebly.com/uploads/1/3/4/4/134400347/biwexegi.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/1/0498/7155/2667/files/best_free_editor_software_for_windows.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c58301e3-4c23-4945-ae91-8b6b00bbbc20/55715557276.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/159f42d9-47de-4b7a-b875-4c1359cede4b/9989023120.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c85c26fa-aae5-41d2-816c-5cb378364962/25052221707.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/462764d1-5216-4608-b337-db39960462b5/99128615014.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da300a10-9fe7-40b7-9714-e320a9995412/1037217931.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a0f010cf-fb76-4606-a22c-a1ff6c3a5e9d/mabid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/1290/6405/files/eso_a_masterful_concoction_ravage_health.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/550b391f-54a9-4cfa-8633-15496b48065e/bikanag.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_off00006922.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6922 5696 bytes
SHA-256: ae0bef8ae121a510c0cd6a3d82948ed2bcbb4ea7714f1ffd1389a542eb0949e6
font_01_sfnt_off00007c80.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7C80 10828 bytes
SHA-256: a9501f5f5ec4146fa542f5df69c2c938b029f9c2ae86c9ced45460d6ef0d7cf6