Malicious PDF — malware analysis report

Static analysis result for SHA-256 b9ced170b7d2bcad…

MALICIOUS

PDF

46.8 KB Created: 2020-10-26 02:49:50 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2020-12-26
MD5: 389a52ed4d927f0c059e36a0d8cc661d SHA-1: dff40cc071e31d066e44e7f6e8a435d7378d4f30 SHA-256: b9ced170b7d2bcadf8249ad5c300c2c21b17a0015a27c9ead76810ffdb7ad49e
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/aws?keyword=blood+group+o+positive+diet+pdf In PDF document text
    • https://xapukuzikoki.weebly.com/uploads/1/3/4/3/134381416/venobumodonelu-pitoz-kigijemidojevox-defigajakikopan.pdfIn PDF document text
    • https://vegilirebaj.weebly.com/uploads/1/3/1/0/131070576/8876174.pdfIn PDF document text
    • https://vewutaniwem.weebly.com/uploads/1/3/0/8/130873717/090489.pdfIn PDF document text
    • https://rajaxamakato.weebly.com/uploads/1/3/2/3/132302926/7551bd00c6cd450.pdfIn PDF document text
    • https://xijonezamo.weebly.com/uploads/1/3/1/4/131407630/30b71999ce14.pdfIn PDF document text
    • https://xazapadikud.weebly.com/uploads/1/3/1/8/131871762/getewir-nanovutu-mivixa.pdfIn PDF document text
    • https://sanuvexugivi.weebly.com/uploads/1/3/1/6/131606490/b9a19.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365546/normal_5f87bbd526d6e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383699/normal_5f8db9029373e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382778/normal_5f915acf339be.pdfIn PDF document text
    • https://rutaluxunenore.weebly.com/uploads/1/3/0/7/130740368/2424171.pdfIn PDF document text
    • https://nipufijupetobug.weebly.com/uploads/1/3/1/4/131482996/e40a063c619de.pdfIn PDF document text
    • https://dejolezeg.weebly.com/uploads/1/3/2/8/132815968/bixofivaja.pdfIn PDF document text
    • http://www.ascendercorp.com/In extracted file (font_00_sfnt_off000079b8.bin)
    • http://www.ascendercorp.com/typedesigners.htmlIn extracted file (font_00_sfnt_off000079b8.bin)
    • https://cdn.shopify.com/s/files/1/0482/1516/3032/files/phil_swift_memes_titanic.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0502/2148/2142/files/89668822510.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0268/7723/1278/files/elca_policy_manual_chapter_15.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/4410/7950/files/37747477644.pdfIn PDF document text
    • https://s3.amazonaws.com/wilugugo/wayne_shorter_adam_s_apple.pdfIn PDF document text
    • https://s3.amazonaws.com/zetare/medical_microbiology_book_free_download.pdfIn PDF document text
    • https://s3.amazonaws.com/wenobagupexekap/64013814086.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/business_letter_writing_format.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 extracted file (font_00_sfnt_off000079b8.bin)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000079b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79B8 5108 bytes
SHA-256: 2c596377e3d87451a663039557a6a52a8e3d6153ccd42b4933271a33179f1874
font_01_sfnt_off00008b3b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3B 10404 bytes
SHA-256: 4a2e504388b0ef23874607e8742ab8b629c8eb6e921f9158b8babb813d76b1d5