Malicious PDF — malware analysis report

Static analysis result for SHA-256 f16c3035294b4a87…

MALICIOUS

PDF

48.2 KB Created: 2020-11-07 09:49:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-11
MD5: 9530b26c68cd9eec89fe03e6413d2ee2 SHA-1: 56be5964bd0fdedc3c8085a9fac2e4b2a95f070c SHA-256: f16c3035294b4a87ba7ea324834c8fcd8c989c57f6328e58f61925d8e98ffdcb
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=what+does+khazad+dum+mean PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4367297/normal_5fa20eb02ea12.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368235/normal_5f98a0b83af7d.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4380211/normal_5fa5d0a849127.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366344/normal_5fa38c4de8c07.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://uploads.strikinglycdn.com/files/cac77402-d557-46c1-b6b2-df08423a6b5b/80443730540.pdfIn PDF document text
    • https://s3.amazonaws.com/boxujetanonikuv/mevarubusizobefe.pdfIn PDF document text
    • https://volokal.files.wordpress.com/2020/11/72476365152.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3ada48f7-8504-4d42-9166-c9e59110e7cc/45421409196.pdfIn PDF document text
    • https://povojoboxep.files.wordpress.com/2020/11/48117456878.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/07b159d9-6cda-4384-bfb5-ba8fd7ec6bfb/free_shooting_games_unblocked_games.pdfIn PDF document text
    • https://woremuses.files.wordpress.com/2020/11/1913831395.pdfIn PDF document text
    • https://s3.amazonaws.com/nemafu/35291200546.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/597a3f19-24e8-4e7c-8b35-514cc974f866/lewis_structure_so2_2-.pdfIn PDF document text
    • https://s3.amazonaws.com/gumagabu/balusaniwakefetotuv.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3bba56fd-2c98-4879-92b0-a4c0bbfbbc91/6452167718.pdfIn PDF document text
    • https://s3.amazonaws.com/pizivurapab/breadman_bread_machine_manual_tr440.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_off00007dff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DFF 5064 bytes
SHA-256: 9618cfac733a06b2f38e0980017046c15554c38f34144008340223243037318b
font_01_sfnt_off00008f27.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F27 11256 bytes
SHA-256: f313b424ed8494c1ea89339b2cf82c1edbfb0fae53ebde65485bc32ff174e219