Malicious PDF — malware analysis report

Static analysis result for SHA-256 1772500e840a92ef…

MALICIOUS

PDF

45.6 KB Created: 2020-11-01 16:18:56 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 2c079895cf5bd56a8af17b61025c4160 SHA-1: 8219307c6dc49b7a7c427398e9f290e4e21ba683 SHA-256: 1772500e840a92ef93290c964eb9bb24f65067798ed67061cea09cb0310450e3
184 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.
  • 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://ttraff.me/123?keyword=ap+world+history+chapter+16 In PDF document text
    • https://cdn-cms.f-static.net/uploads/4372723/normal_5f94885fedb1e.pdfIn PDF document text
    • https://vidigesiwixir.weebly.com/uploads/1/3/3/9/133997627/tekuv.pdfIn PDF document text
    • https://varipejat.weebly.com/uploads/1/3/0/7/130739080/gowedazenanoxujulude.pdfIn PDF document text
    • https://bibeliki.weebly.com/uploads/1/3/0/7/130738572/6718811.pdfIn PDF document text
    • https://vomediwanuxorat.weebly.com/uploads/1/3/4/3/134327005/wasaduruso.pdfIn PDF document text
    • https://xufiwelak.weebly.com/uploads/1/3/1/1/131164558/vokodenomone.pdfIn PDF document text
    • https://fukikabigo.weebly.com/uploads/1/3/4/4/134457586/pepanepiganoxi_pufemeriva_nowavadizogap.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375700/normal_5f9391ebc6fea.pdfIn PDF document text
    • https://nikuwexipamojag.weebly.com/uploads/1/3/0/8/130813731/rokomogosozoxaz.pdfIn PDF document text
    • https://raxabebawozovi.weebly.com/uploads/1/3/4/3/134311701/zezazase_romafi.pdfIn PDF document text
    • https://kilutiwoxit.weebly.com/uploads/1/3/1/6/131636983/mamafawem.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/6069273.pdfIn PDF document text
    • https://luminesip.weebly.com/uploads/1/3/4/1/134108660/827cbea92c718.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/3bfcb16b-cc6e-4f6e-a1a6-4b8c3e643f1a/62815459266.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d0db1d5a-6e2e-4cf8-916d-b1c8e27ab671/vapiwozebezil.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_off00006682.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6682 5232 bytes
SHA-256: a4fc534fbebbc52a3db30e9e08f7511c4471a3b5684d21b00a71bf1e9840e2ff
font_01_sfnt_off00007874.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7874 10324 bytes
SHA-256: 1675001f051d5a41c4066eb91fd2620f39da9cb6bcfa015fa619424bbc278a2e
font_02_sfnt_off00009b8f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9B8F 4324 bytes
SHA-256: 0d0f64e27578eb124b8bc81c7eceacdd166e22eddd95c81328e9fbd7de2a6333

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