Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d0ef84ec298702e…

MALICIOUS

PDF

49.8 KB Created: 2020-11-07 21:47:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 848eca67279d9819c49d55e841a4da30 SHA-1: fa4d6137cbcf7636ce753d1f3f8890419677f65c SHA-256: 3d0ef84ec298702ec0f0837c2bb5d7e9406a20366a1efcd30000721809a7f568
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://traffmen.ru/aws?keyword=rosario+de+la+rosa+mistica+para+imprimir In PDF document text
    • https://tazejoga.weebly.com/uploads/1/3/1/3/131383942/kizepodujuxejinisasa.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366993/normal_5f8e33df8b1f5.pdfIn PDF document text
    • https://zewubonorow.weebly.com/uploads/1/3/1/3/131398185/5291399.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409000/normal_5f99af22852d0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4381105/normal_5f8aead97bf77.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379049/normal_5f93c6f2a64a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4449783/normal_5fa23f032b7bc.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://s3.amazonaws.com/xezonijida/piano_sheet_music_with_letters.pdfIn PDF document text
    • https://poxijotavix.files.wordpress.com/2020/11/93931831468.pdfIn PDF document text
    • https://panikofu.files.wordpress.com/2020/11/metamorphosis_2_philip_glass.pdfIn PDF document text
    • https://wotenopofe.files.wordpress.com/2020/11/budixaw.pdfIn PDF document text
    • https://vadazigifexe.files.wordpress.com/2020/11/merozasopegujibe.pdfIn PDF document text
    • https://gadutup.files.wordpress.com/2020/11/zilepumazosabakedavax.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_off0000749c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x749C 4908 bytes
SHA-256: 0efc3937fe31cc1bcb6455a6ac569c283b865e31045114c3c9b8f53af37033de
font_01_sfnt_off0000854b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x854B 11696 bytes
SHA-256: de0ac1f943d0fe5f3a0b42ec217eac72a284119c3bccf6e74979695640006001
font_02_sfnt_off0000aabd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAABD 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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