Malicious PDF — malware analysis report

Static analysis result for SHA-256 2387814f20a14431…

MALICIOUS

PDF

48.5 KB Created: 2020-11-08 12:25:39 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: e4136cbf7984bf5fc0c5161079c401a2 SHA-1: 76302cb167a86eda17ede2599e23ce1fafc3dc61 SHA-256: 2387814f20a14431b3fd6fa556b59bd59d421d435a9c0d9aa385ba9af8d116a0
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://traffset.ru/123?keyword=avalanche+vs+sharks+final+score PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4390095/normal_5f95c7ef3291e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379229/normal_5fa224b99637d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375353/normal_5f8dfd7de80c4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://dipadek.files.wordpress.com/2020/11/56061111733.pdfIn PDF document text
    • https://s3.amazonaws.com/jiwisigetizoxif/somebody_wanted_but_so_then_worksheet.pdfIn PDF document text
    • https://pefatukumon.files.wordpress.com/2020/11/resplendent_glory_score.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/604c8680-b707-4f9d-83b7-a05ba66363b7/daduvopesiruxomuliribal.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/653f8fa8-6c95-49fa-b8c4-c44c86b6d912/the_censors_luisa_valenzuela.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/53353c5b-1633-47c3-a902-efc934b9caa4/words_starting_pri.pdfIn PDF document text
    • https://s3.amazonaws.com/sazariwapa/local_anaesthesia_in_dentistry.pdfIn PDF document text
    • https://zogidadovo.files.wordpress.com/2020/11/gajarewelanuzalujepokez.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_off000070c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70C8 5080 bytes
SHA-256: fe35d22bfd43a0a9745427e0bfd83b17876cec7cab770941f5f54833aa8df20f
font_01_sfnt_off00008206.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8206 2464 bytes
SHA-256: e2471563708f8728ce2eaf177b5360effcf222f88fef6f1e84702366dd34a49d
font_02_sfnt_off00008ce0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8CE0 11708 bytes
SHA-256: 7d0b1451d84a99d2597e618b323d05904c588b7f3adedc08ba7de25b46e83bc4