Malicious PDF — malware analysis report

Static analysis result for SHA-256 230f2bbe0067e4e9…

MALICIOUS

PDF

44.5 KB Created: 2020-10-31 17:20:51 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6529495d38c5be40e66cedee082b5bad SHA-1: 164678612a26e9fb7643c924573a92508ac7fd0c SHA-256: 230f2bbe0067e4e98b04c5d3d7054c79d8c76548d828767ffbb76eb4d9281eae
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 5

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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.
  • 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://gettraff.ru/aws?keyword=manual+garden+tiller In PDF document text
    • https://cdn-cms.f-static.net/uploads/4387706/normal_5f9cc1595302f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407062/normal_5f95dd5d9e37c.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/8694/7500/files/4080443268.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a9151e27-eb9b-40e3-a748-dfd1d0425b72/53573190011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b229d5ce-e2fa-4edd-8818-7dfdaf24d494/pregnant_porn_sites.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/22a48514-fbc8-4c7f-af13-8a68639128a2/16868870555.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f5308b10-cbad-4d2d-8ce8-42d30228bb09/kanevalogeladinuxunik.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a7f7e52c-8307-4f2f-83af-2e4041aab9df/dogevedoneniremiwa.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bf167e1f-d7eb-4e2e-91b6-d1761fe30f28/fepexuwaxemeradux.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8a45252a-b627-4d8d-9c7e-db2f252f4cc9/46932070969.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7c87ff97-19bd-415f-a7d3-377641b1f144/zelda_dungeon_twilight_princess.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/85aa5190-e110-46a8-a530-a0e296230a7b/62849599670.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/757928af-4334-4489-8913-c51b05703047/zipufoloseduwesapajulowi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/23b327ca-c56b-43cb-a34a-2ea837d5fb34/16506712868.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0482/1450/7672/files/vidmate_old_model_apk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f81ba3ef-0603-4d3d-a95c-f729a73fe6d8/gta_4_dating.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd4b4545-62ee-4952-9e54-cea130f29633/demi_lovato_gifts.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_off000071dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x71DC 4820 bytes
SHA-256: 2c3abe05abf6606b6b35fd79d0f3daac06578893ffae0dc72973767db2fe97a5
font_01_sfnt_off00008257.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8257 10212 bytes
SHA-256: 90f63bfde986ea785a40e43192f37ca309bceb2d7c6e0c372050d98a14570aa9

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