Malicious PDF — malware analysis report

Static analysis result for SHA-256 be185dfe4474d560…

MALICIOUS

PDF

35.6 KB Created: 2020-11-04 14:30:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5eac36791af65d66164498daf0effcb6 SHA-1: f895d9295fb7ca266eb67f3d1dbd80c5d4ead77b SHA-256: be185dfe4474d560dbf9dc580f16a38c5fc97a0b27d6477c5029b813c2125a5d
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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://ggtraff.ru/aws?keyword=lyrics+to+greedy+by+ariana+grande In PDF document text
    • https://dibozavo.weebly.com/uploads/1/3/4/5/134501923/wobedufeji.pdfIn PDF document text
    • https://vodipewelo.weebly.com/uploads/1/3/1/6/131637384/rirewotubazejibigi.pdfIn PDF document text
    • https://xonimitofowe.weebly.com/uploads/1/3/2/6/132682232/7949030.pdfIn PDF document text
    • https://rajomiluti.weebly.com/uploads/1/3/2/6/132682989/78ec56c.pdfIn PDF document text
    • https://bilewazivabo.weebly.com/uploads/1/3/2/8/132816117/2318292.pdfIn PDF document text
    • https://ranerenonosojib.weebly.com/uploads/1/3/1/4/131483420/1127a31.pdfIn PDF document text
    • https://zatazonikafude.weebly.com/uploads/1/3/4/3/134340422/tugamobu-lofikepir.pdfIn PDF document text
    • https://busigejog.weebly.com/uploads/1/3/4/0/134017549/buxok.pdfIn PDF document text
    • https://seguronudolag.weebly.com/uploads/1/3/4/4/134468074/fb26994.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/jamokaroxoj/2466930478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8630c652-57c7-46fe-ab2b-0b3dae480dab/68318505329.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0a68ea37-3ab1-4671-a50d-71ec8527cc1f/36995061010.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/77340dd8-6f89-404a-8a39-287ef824ef1e/61439701523.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_off00004fc4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4FC4 5260 bytes
SHA-256: 6cb3f8c66e33e7295dbaa2107bae4db36b81ae47fcb58f272a663fc314076ef5
font_01_sfnt_off000061b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61B9 9452 bytes
SHA-256: e74a63accd4e6a2657e53f97cccf928dc237749d5bd7be0b22c5e44d0398f8f9

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