Malicious PDF — malware analysis report

Static analysis result for SHA-256 b272b2444aebb01a…

MALICIOUS

PDF

38.0 KB Created: 2020-11-09 06:32:27 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 0190a25e556d388793d1dfe532190866 SHA-1: 4a37534a880f3356787abe61620f4ece2a9a67be SHA-256: b272b2444aebb01aaaacefb91cdaa590725a425edfab092820eba62a25f0e55c
94 Risk Score

Malware Insights

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

The PDF contains an embedded link that redirects to the malicious URL https://ggtraff.ru/123?keyword=newton+s+second+law+of+motion+worksheet. This heuristic firing, combined with the ML classifier's high confidence, indicates a malicious redirector attempt. The document body text appears to be obfuscated or corrupted, preventing a clear understanding of its lure, but the presence of the malicious URL is sufficient evidence of malicious intent.

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://ggtraff.ru/123?keyword=newton+s+second+law+of+motion+worksheet In PDF document text
    • https://cdn-cms.f-static.net/uploads/4421208/normal_5fa3dd3870240.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371004/normal_5f8dd3c223668.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367294/normal_5f9e6ad3d840d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393345/normal_5f966c973ac5b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8b53274d1a6.pdfIn PDF document text
    • http://fontawesome.iohttp://fontawesome.io/license/In PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/2afdd7b1-cee3-4a95-b5c4-73738d5d2030/tofase.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a3baa99f-22df-4298-81a0-35f8bc4fe7d8/one_piece_unlimited_world_red_pc.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b30109b-1a64-4d7f-aecb-8460a78edec9/tifutukusenasit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc4faf9b-e59c-42cd-84c3-ac64112e1d5e/diwogusowari.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/cd596048-b418-412a-888d-eedbd9a9a839/sims_4_retail_overhaul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/79d886fa-1bc6-4c98-b49f-41b2495e87f5/11281916368.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6fcfc0ac-c9d7-4ff6-8bdb-4a60619f1410/jokijarojidurejafono.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e929fb20-39be-4b1e-8cde-fc8719e727a8/princesa_disney_para_colorear.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/74981616-09cb-451e-8ba1-9e3f7caa379b/tuesdays_with_morrie_quotes_love.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b7358c8c-2776-499e-a4f7-f503c4e72215/94110371453.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_off00004d65.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4D65 1964 bytes
SHA-256: 06d927bb2b6daf891478ab4cab90709232d593f7c9b2cc46f53d704c02e6609f
font_01_sfnt_off000056b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x56B3 5384 bytes
SHA-256: 46da5f207d4368e98feeafa2beaeec5ce8e21751a5c22ecd9c9a8325093420a0
font_02_sfnt_off000068f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68F2 9980 bytes
SHA-256: 40713ee5ab7c365f1158d5c4cd2b9ce9c31b58260425b096edf444aaf116c167

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