Malicious PDF — malware analysis report

Static analysis result for SHA-256 ba045d597aab8a50…

MALICIOUS

PDF

72.6 KB Created: 2020-10-02 09:35:35 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c3133be20297823eefca49769083b899 SHA-1: bded5d47c12b3a8bd27ad94c443c674523dcd0f7 SHA-256: ba045d597aab8a50683d229b5714cdb9b44ab26dda88680323d102cfd823498c
184 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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=perico+ripiao+completa+en+espa%2525C3%2525B1ol+latino In PDF document text
    • https://site-1038660.mozfiles.com/files/1038660/ribowatetadarikezovilo.pdfIn PDF document text
    • https://site-1037837.mozfiles.com/files/1037837/furakepajosowogu.pdfIn PDF document text
    • https://site-1038867.mozfiles.com/files/1038867/81177089221.pdfIn PDF document text
    • https://site-1036965.mozfiles.com/files/1036965/28757620605.pdfIn PDF document text
    • http://files.sharhazlah.co.uk/uploads/1/3/1/3/131379699/fogibux-kokezisuvebeb.pdfIn PDF document text
    • http://bifasure.camilletownshend.com/uploads/1/3/1/4/131483281/mugaku.pdfIn PDF document text
    • http://soburaja.jodynixmusic.com/uploads/1/3/0/8/130814995/8857830.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/7f1a3945-c769-4b07-83e3-4702e48fd188/jametukuvosukaf.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8e1142f6-d855-4a9e-bac3-efb6d4543333/bepabosuro.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/6d3e3dd5-e264-4f10-b919-44f5485882a8/51375913511.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1a49b988-74c8-4ee4-a7e4-3ef43b40609e/tufijaverosada.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81ec5b73-33d1-4f13-bcb8-80c5f6388af6/42452017669.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bafa8e95-99ac-48ad-8854-e86f16830ab5/vibotazegizifobataji.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a32c2756-7ee6-4b3c-b488-9794de0fa002/zidimekalujiniganedafeju.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f25e1913-b9bf-415c-95eb-c5ed5ef30ff7/73661181198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/931bab99-befd-4ff9-a9a1-f9318534eea5/jepepe.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ac89f6f7-3f4a-4104-9c6b-62d877b394e8/50212077168.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_off0000c9c7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC9C7 3564 bytes
SHA-256: 715ea22226ee3f0cc0e3c9dbe428424efc1356633bbe9bfc2ba57e01d6defb6f
font_01_sfnt_off0000d687.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD687 5292 bytes
SHA-256: 2917efb81df80f83357e630e3dcc604cb243c239d75a94edc0a6651287388558
font_02_sfnt_off0000e830.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE830 13492 bytes
SHA-256: f65125c405641a3da5640f8b57b5785a327a9072966f21afb2c7f5836c5c28b1

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