Malicious PDF — malware analysis report

Static analysis result for SHA-256 15b9c69018d8b9de…

MALICIOUS

PDF

42.3 KB Created: 2020-10-15 08:11:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: eb8930a964950852047d19c76327bacd SHA-1: 917a6c959bd76bb0484dcf5dd96cd541ad27f432 SHA-256: 15b9c69018d8b9de4f61c4d3d0b7f9395936d4db28b9edae3e2f80f3eae619cd
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://ggtraff.ru/123?keyword=ghana+must+go+book+pdf+download In PDF document text
    • https://cdn-cms.f-static.net/uploads/4366654/normal_5f871dbcac06e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366406/normal_5f87d9047f9d4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368218/normal_5f87cfec218d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366978/normal_5f87412a3cdac.pdfIn PDF document text
    • https://site-1043207.mozfiles.com/files/1043207/pick_up_the_pieces_chords.pdfIn PDF document text
    • https://site-1042188.mozfiles.com/files/1042188/delete_pages_from_mac.pdfIn PDF document text
    • https://site-1037132.mozfiles.com/files/1037132/70394078495.pdfIn PDF document text
    • https://site-1043843.mozfiles.com/files/1043843/36116921707.pdfIn PDF document text
    • https://site-1048206.mozfiles.com/files/1048206/tibabo.pdfIn PDF document text
    • https://site-1039915.mozfiles.com/files/1039915/tafovoger.pdfIn PDF document text
    • https://site-1039578.mozfiles.com/files/1039578/3007628864.pdfIn PDF document text
    • https://site-1038916.mozfiles.com/files/1038916/nemupapevuzase.pdfIn PDF document text
    • https://site-1037166.mozfiles.com/files/1037166/29694217503.pdfIn PDF document text
    • https://site-1040125.mozfiles.com/files/1040125/60028443622.pdfIn PDF document text
    • https://site-1043035.mozfiles.com/files/1043035/javowoxododumiridud.pdfIn PDF document text
    • https://site-1038442.mozfiles.com/files/1038442/sagok.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/51948e76-871a-4e69-9f32-f10d60e6a77d/35909577416.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d1a3957c-f23a-4f1e-b21d-96d60ce2d57a/daxikofifobuzine.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/169b9737-05bc-4839-a2fd-7c862089a69e/34766519387.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/326e642a-abc6-448a-9589-683b6fbb9709/57704675203.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4ca561e8-bfef-4e61-9a6a-a42cc01726fd/kufenarenobemoruw.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a147f211-cb6e-4b5a-83d1-5cd96146d216/63599234923.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1009f7ee-3ee6-4c5a-89ae-e5bedde11a80/xegorexesogakaf.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_off0000584b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x584B 5400 bytes
SHA-256: cf44cbde80d9483effd24c16601476b20e50e4d074833100dbc040443d9355da
font_01_sfnt_off00006a90.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A90 10284 bytes
SHA-256: 1531c67cdfcbebabb56f346ee5c4f7dd9815766db51246a8468a308c0d93b36f
font_02_sfnt_off00008d76.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D76 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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