Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0fc823367adfe64…

MALICIOUS

PDF

46.4 KB Created: 2020-11-05 23:36:11 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 46b30fb5790d4eb5fbd81ca217dbfb41 SHA-1: 442c0318b99f4b76c182e003eb56f7afaaed7bdb SHA-256: c0fc823367adfe64eff3ca8d00d95be9fe1b66bbdf773490b6487094815228e0
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9999

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=oregon+trout+stocking+schedule PDF link annotation
    • https://vovezakiw.weebly.com/uploads/1/3/4/5/134523709/kelide.pdfIn PDF document text
    • https://fezuxikazosulav.weebly.com/uploads/1/3/1/3/131398093/jopotudivuge-pimatimax.pdfIn PDF document text
    • https://danawejenig.weebly.com/uploads/1/3/4/4/134499985/zewujiwomogavo-xiwavuz-zigazaxej.pdfIn PDF document text
    • https://votarozoxanobo.weebly.com/uploads/1/3/4/3/134315144/wojudekusitepaj.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f95ee8a4bfd2.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/tajimipojimo/undertale_clicker_hacked.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/654c13b7-8caa-464e-95ee-475b012712e3/19004425112.pdfIn PDF document text
    • https://s3.amazonaws.com/genedesowul/wendys_employee_handbook.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_off00007999.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7999 5084 bytes
SHA-256: 50506e1b4d2eca38cc43084a12f19f98cbc1befdaa5957d04111d1613609c254
font_01_sfnt_off00008ae5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AE5 9992 bytes
SHA-256: ee833aa927bb9ecaeeafd488b123a6eaa803ff677cd3aa7e657e098b61aae877

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