Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b474dbf9000476c…

MALICIOUS

PDF

46.7 KB Created: 2020-10-14 18:12:16 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: c7b040746f15d8be111432b54ce4b051 SHA-1: 3deb5a7a4903c3bc3b99fd3b136e4ba79b0f81bd SHA-256: 3b474dbf9000476c8ce2ba07d04b062b9408738349d2690a4c175faa4c821559
224 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • 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.
  • Remote-support tool lure high SE_REMOTE_SUPPORT_LURE
    Document instructs the user to install, open, or connect with a remote-support tool such as AnyDesk, TeamViewer, Quick Assist, or ScreenConnect — high-risk in an unsolicited document
  • 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://cctraff.ru/123?keyword=casio+calculator+fx-9750gii+manual In PDF document text
    • https://site-1039280.mozfiles.com/files/1039280/fedegufomasorewufobizorar.pdfIn PDF document text
    • https://site-1039889.mozfiles.com/files/1039889/34958728300.pdfIn PDF document text
    • https://site-1038992.mozfiles.com/files/1038992/fifavijaburapufejax.pdfIn PDF document text
    • https://site-1039959.mozfiles.com/files/1039959/92082365627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f870c8fceb76.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365657/normal_5f870016c11f9.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366034/normal_5f86f63af03dc.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/baputedev.pdfIn PDF document text
    • https://jawasolasazilem.weebly.com/uploads/1/3/1/3/131379174/beparinunij.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/1a27643b41869.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lukuxaluk.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/723b0b12-93d3-4de8-8c00-016f33ae757e/renom.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bc969cfe-6dd4-40df-9d7e-d9a4d8979ca0/xajivawefanefepino.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/397b822c-9816-4f4d-a3a0-30c214868385/bodowoxazitelugapul.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a83c3159-c857-4fbc-9404-ff5a2987a4a7/53032117207.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/30ee9163-b30d-4845-82cb-84e23247c096/63826063673.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/515d0ea8-4572-4022-90de-d41c9e9b2d98/lamaz.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f0361634-e7eb-44cc-8298-9c27c3c5522e/besoze.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/46270a71-0fdf-47f1-bd3d-36bc0d51c25a/78665124086.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/fd07d7f0-55af-4ed6-a1f6-088b6144ecaa/37965080698.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/2880/2468/files/does_swimming_actually_make_you_taller.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/8431/1447/files/segatuvudusero.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_off0000748f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x748F 5708 bytes
SHA-256: 86f15a473328e6affc5aae2f0cb56a87f71038f116349c143b01ed7dfabf43d5
font_01_sfnt_off000087f2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F2 10880 bytes
SHA-256: 7309e7d065aef955c5b4bd40dc9a86dcb6d670e8eb6f5b0830965c4d7166f872