Malicious PDF — malware analysis report

Static analysis result for SHA-256 be2df4d37c9a6852…

MALICIOUS

PDF

47.4 KB Created: 2020-11-07 01:29:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 5e974c81cd5fde9d88d45c0d974ec883 SHA-1: 1fa5a1857faa8be6183bd74db612b62d807a73e5 SHA-256: be2df4d37c9a685247242d2d84b3b0f3b64d833d60310a39fb1de1b8a1dd8379
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/123?keyword=viewasian+drama+city+hunter PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4387590/normal_5f983e0ae42eb.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376849/normal_5f958016cd045.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471683/normal_5fa5d0ee80653.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368731/normal_5f87dd6e3e365.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369760/normal_5f8a2b921abda.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/pafiganovavi/chapter_6_physics_test_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/kiwopusafize/chuyn_i_sang_jpg_online.pdfIn PDF document text
    • https://s3.amazonaws.com/mijedusovineti/ccna_200-_125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d9655e0c-d997-49ce-9075-828380494d5f/skyrim_vr_pc_controls.pdfIn PDF document text
    • https://s3.amazonaws.com/gonuxiwela/lobexebawefoxapebokiv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a4862f0b-6516-404c-9776-2878fc4da166/wonemadakobaxitaferegep.pdfIn PDF document text
    • https://s3.amazonaws.com/goneduzum/nemawosasoxofuleb.pdfIn PDF document text
    • https://s3.amazonaws.com/jamokaroxoj/judidaguk.pdfIn PDF document text
    • https://s3.amazonaws.com/vuliwisuwig/tom_clancy_command_authority.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/99279281274.pdfIn PDF document text
    • https://s3.amazonaws.com/bejeseja/kugou_music_premium_apk.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00006d39.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D39 3324 bytes
SHA-256: 788d5e5de0d2cb0880acdde594788cae21481d1e3157c09ebf6fca50c7aa7ce0
font_01_sfnt_off00007944.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7944 5304 bytes
SHA-256: 3c55d54d4ef4599fbc3142979a7fb87532124a8abcf7cfb54b176d9691d0117d
font_02_sfnt_off00008b3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B3C 11272 bytes
SHA-256: bfad776fc9791159afbb1cebc805fd834ea064e008bcf14bffa0120598f0b09b