Malicious PDF — malware analysis report

Static analysis result for SHA-256 881a817bf7830da2…

MALICIOUS

PDF

41.4 KB Created: 2020-10-29 01:42:52 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-11
MD5: e6708d6e43cd5e7204133aa30c16b865 SHA-1: 2c4352641a1b51e994290abbbae3bcc26ecb122d SHA-256: 881a817bf7830da2a4699517bd07f308749efc979d6c65f70023133286cca4b0
94 Risk Score

Malware Insights

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

The PDF file contains a link to a known malicious redirector URL, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL is the primary indicator of malicious intent, likely leading to a phishing or malware distribution site.

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://cctraff.ru/strik?keyword=columbian+exchange+graphic In PDF document text
    • https://cdn-cms.f-static.net/uploads/4424662/normal_5f980d0a03426.pdfIn PDF document text
    • https://ditiwudo.weebly.com/uploads/1/3/1/4/131452947/fulutivodozoruxa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366952/normal_5f8af660f3db6.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0481/1712/1177/files/pesiveroparonizesa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3cca100e-c535-4691-96c4-8ce28c6223f1/kekodakokipitovan.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4a80c17b-057b-41c4-85f0-d1d4ffc736f3/58569250226.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36304200-0b52-49bc-90f9-cb14f34a29ee/kilutetukilawudibewifido.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0477/5647/6572/files/red_book_coin_values_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bdf7e5b8-b6e7-48b4-92b6-602f6c8fff1b/89461579100.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/9456/3221/files/euro_pro_x_sewing_machine_manual.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0497/4195/5221/files/blank_doc_with_continents_and_oceans_to_label.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/9664/4016/files/ponte_en_forma_cocinando_con_ingrid.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/1048/9024/files/beta_beta_beta_chapters.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2c585dc4-1ab2-42ec-a7e2-205be3707fa5/king_root_apk_download_for_android_5.1.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/9851/6893/files/loketebirugi.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00005660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5660 5204 bytes
SHA-256: caade69b2fb0b582d5dd67ed5a17a573c0cb8c21df87b08878d81abc58e7d023
font_01_sfnt_off000067d8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D8 10192 bytes
SHA-256: 1049c597ad0df49d05a49f253e9e44012c98645a2abc16e407b2373e50e51b5a
font_02_sfnt_off00008a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8A 4324 bytes
SHA-256: cd94ef65598b1866d0653cdd88243d989fd81359c0e770c2d3a4858f1c2f6d34

Open this report in the interactive analyzer, or submit your own file for analysis.