Malicious PDF — malware analysis report

Static analysis result for SHA-256 294993aada79364d…

MALICIOUS

PDF

35.8 KB Created: 2020-10-09 15:43:44 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 5f757983928251e7c514bc58fbe45129 SHA-1: de1cd67034b0ba125a1bbe68151646b36a360cbd SHA-256: 294993aada79364d11b775751c359b6b7dbba437c3b90061a0de00484ceee681
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://ggtraff.ru/strik?keyword=descargar+musica+de+raulin+rodriguez+me+siento+triste+hoy In PDF document text
    • http://files.saintjameslaconia.org/uploads/1/3/1/4/131407887/bf8a9.pdfIn PDF document text
    • http://files.jharidingacademy.com/uploads/1/3/2/7/132740414/9936440.pdfIn PDF document text
    • http://files.gomotorcycling.org/uploads/1/3/0/7/130775897/zalud.pdfIn PDF document text
    • http://files.allpointstravelconnections.com/uploads/1/3/1/4/131407310/peralik_junawuwerogu_womenu.pdfIn PDF document text
    • https://site-1038497.mozfiles.com/files/1038497/naxesofumowakesefuwijusi.pdfIn PDF document text
    • https://site-1039711.mozfiles.com/files/1039711/nupanakezidubitenotudulal.pdfIn PDF document text
    • https://site-1040388.mozfiles.com/files/1040388/33091174028.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/0a892b5e-176c-4b2a-9e77-e873ee55e8fb/luxab.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/18a12a90-ee2b-4895-970f-6f6f4c9ac481/414379198.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4f7be2c-e384-4471-9aaf-d4bc679fec61/82436086848.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2deadd1a-d299-488a-923d-6cfc4f6604f5/pixugavifixuvi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/636e877f-0332-4760-aacf-2224f16c9c35/63595885405.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5b1eba49-d62d-4f22-af46-9840cb9c1da7/nurifokopajovulurenobos.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf027da1-3ed8-4893-8026-14f8d1d79400/sopomav.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcea7ddd-230a-436a-8a43-fc11da40deed/jukome.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ee04421c-44d0-4ba2-9153-e9461643de0b/dasowibixuvun.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_off00004cbb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CBB 5504 bytes
SHA-256: 482c14f7581c3d157711a2bb7e6f6969e2c603af7f9416a0fa2236e55387a36b
font_01_sfnt_off00005f5c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F5C 9968 bytes
SHA-256: 7fea19efe59b64466d2d93e93b943a5fb88e85815f5b4a89ee66f24e709bd18b

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