Malicious PDF — malware analysis report

Static analysis result for SHA-256 661b6ab052a01d88…

MALICIOUS

PDF

41.3 KB Created: 2020-11-06 05:40:55 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-22
MD5: 7bd3e9344678434571a3767e97362b84 SHA-1: 23875641ff2ef8ff1969b61e64b575e23ce2c8e9 SHA-256: 661b6ab052a01d88805ae4082703895ddfeca63b5a1cb94a540157a2041e625f
94 Risk Score

Malware Insights

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

The PDF contains a link that redirects to a known malicious domain, as indicated by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The embedded URL, 'https://ggtraff.ru/123?keyword=words+that+describe+a+person+starting+with+p', is the primary indicator of malicious intent. The ML classifier also strongly flagged this PDF as malicious.

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=words+that+describe+a+person+starting+with+p In PDF document text
    • https://cdn-cms.f-static.net/uploads/4375703/normal_5f96b65433ced.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/domegagowevag/stock_market_basics_in_hindi.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/acidity_of_alkynes.pdfIn PDF document text
    • https://s3.amazonaws.com/zuxime/68607423049.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/856c0f30-07c5-45f9-a43d-32f8bbf3802c/44645321747.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bcc84ea9-e0b7-4926-a4e0-49ec97bca04a/49233727887.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/smooth_operator_bass.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac54de56-4a2c-4da7-b3b5-daf71a67ec61/46019431732.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ef2536f8-bfe9-453b-bc6a-154c45219f96/uygulamalarla_siber_gvenlie_giri.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1bcd8060-1a48-4a99-945b-40150ce57637/nutiwidazulak.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e0622498-01b6-4d8b-bea3-da875cae1c66/62677491882.pdfIn PDF document text
    • https://s3.amazonaws.com/memul/lavazolotavugusam.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_off00006128.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6128 5548 bytes
SHA-256: 0b312b29c404b9f75bb5ff0b52e13b7e1a7f8694965174e8f8c938f229894e5d
font_01_sfnt_off00007414.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7414 11064 bytes
SHA-256: d3eb039fc9469d56f7a02a8265fd7cbb91ed17d5ea622f5856a8fdb042887dbd

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