Malicious PDF — malware analysis report

Static analysis result for SHA-256 bd01edb0a52d083e…

MALICIOUS

PDF

60.5 KB Created: 2020-10-25 11:33:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 1526504586569be95afed8f457fef2ea SHA-1: d9d73635e052dbda761dffaa49fc98ee175d52f0 SHA-256: bd01edb0a52d083e0adbedb03ed78cbaab41f095df693db0c90d417810ac1a09
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://ttraff.link/pify?keyword=necromunda+book+of+judgement+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4369307/normal_5f8e31e7e2c65.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377125/normal_5f91092e53fcc.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4403676/normal_5f91272c00621.pdfIn PDF document text
    • https://babikovinemixe.weebly.com/uploads/1/3/1/8/131856339/rovumotokutebu-bologupi-zavijodorap-kukatoxepi.pdfIn PDF document text
    • https://zekuwatifakaxi.weebly.com/uploads/1/3/2/8/132815855/dotuvakajodedezav.pdfIn PDF document text
    • https://gemaxudemaxepeb.weebly.com/uploads/1/3/1/0/131070646/bilerolet-nufatu.pdfIn PDF document text
    • https://guwomenod.weebly.com/uploads/1/3/0/8/130873843/palaj_xofepevez.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/673d5630-808e-4a0c-a81d-e1444e1d57d4/xepimasexifisefuburu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/84944325-9623-467a-b044-eb3a18ebcb4a/43351135232.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/14195767-c956-4032-b941-a1eb0f58ced9/dungeons_and_dragons_dice.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0180fcc7-5934-4185-be9c-57bef645b718/guduxujewanozoto.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9bb16a47-32e0-48e6-8346-c54b6ff18a1c/daxikisibenoxubug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e7803899-ad4a-4dd4-a6b8-1f3edc655c75/drama_raina_telgemeier_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f4ef07f-af23-4eca-9568-5cf5ad40e313/ikea_billy_cage.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8b35ff8f-ecee-41fd-bc95-1776015cbf46/the_picture_exchange_communication_system_training_manual.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0e0f6ac3-a05e-4b5d-91e2-1c14b7fe06e9/32429752620.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c2836779-b154-44c1-ba8b-0d348add6d44/manual_para_una_comunidad_escolar_segura.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0b9ab764-803d-4cef-a56e-f0b1004d9909/75103077125.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d3fe0882-af87-436d-8ce0-06f528b6975e/bbg_guide_2.0_free.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a6e40c5c-e8c7-4594-8c39-77809d7f7af9/73673379775.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_off0000a85a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA85A 5636 bytes
SHA-256: 7269ff70889b051d28fb51d3d9e375325ca054a617023bd0d73ea1b9285ccaeb
font_01_sfnt_off0000bb86.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBB86 12472 bytes
SHA-256: 1e8ce3f95235160699de1f88ad0077824cc600bba5679133aa37a8a0a09b1f7a