Malicious PDF — malware analysis report

Static analysis result for SHA-256 62abc8643f17862a…

MALICIOUS

PDF

37.7 KB Created: 2020-11-08 14:43:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e9538d255c707917898a6e03cef1332e SHA-1: 52ecc2d209571b4ae7b6e55e95f34ebcfb4b661c SHA-256: 62abc8643f17862aad074643749061033758ed7a99747b03e3df9e57ed5c94fd
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://trafftec.ru/123?keyword=aqworlds+leveling+guide PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4389568/normal_5fa53fe30f977.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4387430/normal_5f96222b71bc4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403808/normal_5f955d0a7d843.pdfIn PDF document text
    • https://jokojizo.weebly.com/uploads/1/3/4/5/134509913/xifomavutami.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/baxunaf/govizejifakutopiwiwurovu.pdfIn PDF document text
    • https://s3.amazonaws.com/mejediparaxi/11326529444.pdfIn PDF document text
    • https://s3.amazonaws.com/mubefula/kadaleto.pdfIn PDF document text
    • https://pefukiketez.files.wordpress.com/2020/11/the_crucible_worksheets.pdfIn PDF document text
    • https://zolirukefo.files.wordpress.com/2020/11/4135364692.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_off0000568c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x568C 5052 bytes
SHA-256: 46aad9ea114ee4cd416c8793ffd8c584656e90bf90eb9eb0f91a9b7f55612504
font_01_sfnt_off000067d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x67D9 10168 bytes
SHA-256: a01f8ce485cefe75be2e4f519bbe6f6e00e7162c491c922050598f27e1f75071

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