Malicious PDF — malware analysis report

Static analysis result for SHA-256 c05db09b09693422…

MALICIOUS

PDF

45.7 KB Created: 2020-10-29 15:47:14 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-26
MD5: 48ff7e13501b35e7db095844ae8b1780 SHA-1: be7a6c26ed13d39043447b598ffdc2326a57eb45 SHA-256: c05db09b09693422ac23da39bd0ff768538f49966966488a2103325c8be36d35
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, identified by the PDF_MALICIOUS_REDIRECTOR_LINK heuristic. The ML classifier also flagged this PDF with high confidence. The embedded URL, https://cctraff.ru/aws?keyword=round+robin+parlay+explained, is the primary indicator of malicious intent, likely leading to a phishing or malware download 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/aws?keyword=round+robin+parlay+explained In PDF document text
    • https://cdn-cms.f-static.net/uploads/4367959/normal_5f9280722a046.pdfIn 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/f03ce762-e5c6-44ac-afff-483690f81160/33360272692.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/93fa4ff2-8552-4670-8e3b-5f8d43d27e00/78638174803.pdfIn PDF document text
    • https://s3.amazonaws.com/bifamomove/pekijopafasipasodi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68f7c6ad-18c0-40b9-a08e-b58b9b2c787e/gemenisubegixuxubabojunip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f625037e-b95e-4415-afbc-ff456b30c2d3/10047096390.pdfIn PDF document text
    • https://s3.amazonaws.com/susopuzupure/definition_cahier_des_charges.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8d4018f8-bfd5-46c0-9ba3-0be6bdc827ee/remar.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/08be46eb-56fd-4df7-bd04-2d8121874b4f/gw2_caladbolg_quest_guide.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/871ad590-97d0-4e41-ae33-32980bd03aff/kutesenaselusoru.pdfIn PDF document text
    • https://s3.amazonaws.com/dorobukasawituw/types_of_cadences_in_music.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c78da81c-b24d-4b25-8c9b-2e37ee67d108/metodo_de_transporte_costo_minimo_on.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_off000072f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x72F6 5092 bytes
SHA-256: 60d45780865632dac1a5e9af49dacd7d4cf5339ee8b14705ab871332fa987877
font_01_sfnt_off00008462.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8462 11160 bytes
SHA-256: 0f04f26e83ebe6ec39ae5ffd96b797f8e393da867c98ccbe92c1bc05a95801b5

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