Malicious PDF — malware analysis report

Static analysis result for SHA-256 2965ba68ea23c70b…

MALICIOUS

PDF

55.8 KB Created: 2020-11-07 08:13:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: f675aab8318de935fb32dd1b4cd0a5f1 SHA-1: 76b1d34f5615953ca25897247a9fc56c82b0b15f SHA-256: 2965ba68ea23c70bf2c8f4986ebc08c2ef02c3adcdfa28861119d42f6b19b719
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://trafffi.ru/aws?keyword=free+rpg+games+for+pc PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4375210/normal_5f9c8e70c663b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4385617/normal_5f8ee5129200f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365563/normal_5f8745282ade1.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/fotepopunaj/sotazu.pdfIn PDF document text
    • https://bafelego.files.wordpress.com/2020/11/landscapes_pencil_drawing.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a79639a4-a4e0-4680-8c93-45b1e80e8753/laxat.pdfIn PDF document text
    • https://sipodugegir.files.wordpress.com/2020/11/36185910287.pdfIn PDF document text
    • https://zubonep.files.wordpress.com/2020/11/melipur.pdfIn PDF document text
    • https://gunefekun.files.wordpress.com/2020/11/intertestamental_period.pdfIn PDF document text
    • https://s3.amazonaws.com/gupuso/tepolut.pdfIn PDF document text
    • https://s3.amazonaws.com/dutuzanob/vaxelarejura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b50bc9c1-306d-4234-aa41-a51770f40dd4/65099726803.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/167aff2d-b666-490a-87aa-02ebcee66021/88244288836.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_off00009bca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BCA 5260 bytes
SHA-256: 2300c1778de896187230e9dcbc0a3eb386eaeb6956232ef9164304ab312ea051
font_01_sfnt_off0000ada0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xADA0 10992 bytes
SHA-256: 9166fae3789987e21a126dea800d21c8570a7a203e2a4a3688818a4eeade5145