Malicious PDF — malware analysis report

Static analysis result for SHA-256 3b8982589381d307…

MALICIOUS

PDF

68.7 KB Created: 2020-11-07 01:55:29 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 25975036cbc642f091c7611cc6a2e9be SHA-1: dea3bbf8fdf667cfa59cb529cb4f4833b852fb4d SHA-256: 3b8982589381d307f78e35d29be7b4ad2070a87fb3035287d8c7f1dc000b982c
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://traffking.ru/123?keyword=cartoon+network+schedule+1997 In PDF document text
    • https://soguleta.weebly.com/uploads/1/3/4/3/134305846/6a34c.pdfIn PDF document text
    • https://netaluzubik.weebly.com/uploads/1/3/0/8/130813777/sopobejojeva-sudorupivenigix-dikosiluf.pdfIn PDF document text
    • https://motanaweda.weebly.com/uploads/1/3/4/3/134316912/vonekaxarili.pdfIn PDF document text
    • https://xabolagusi.weebly.com/uploads/1/3/4/6/134631680/jagojataletobup_bopube.pdfIn PDF document text
    • https://kujuxase.weebly.com/uploads/1/3/4/5/134584075/05dd74b.pdfIn PDF document text
    • https://lewonodi.weebly.com/uploads/1/3/4/3/134330754/babekevewafexi_fumubukaf_lomabipoti.pdfIn PDF document text
    • https://kizozejibudi.weebly.com/uploads/1/3/4/4/134460324/ec4ca72ace.pdfIn PDF document text
    • https://wixurawitubeza.weebly.com/uploads/1/3/4/3/134319602/fanopakamejelo.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/e2c51b5f-9817-485c-84e1-31121abe8f39/4824442009.pdfIn PDF document text
    • https://teviwuder.files.wordpress.com/2020/11/lofulevusi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8ef688ad-9fab-4419-8f7a-b3a7157eab6b/discrete_mathematics_and_its_applications_8th_edition.pdfIn PDF document text
    • https://minezonateta.files.wordpress.com/2020/11/72776004096.pdfIn PDF document text
    • https://vamudud.files.wordpress.com/2020/11/lizegenunemuwomizam.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c80f4fe6-2590-4243-95f3-32be3d009ff9/bemamekonowenajixof.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_off0000bf66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBF66 5328 bytes
SHA-256: 3ef91e33633313a8e5791b4ea599f8a8610b2191b910fc5a3c614b5ded568a22
font_01_sfnt_off0000d19c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD19C 11116 bytes
SHA-256: 17d74360e47f5a0c45313d07e2ddcbb9b259c986a192712875e3dcccc9c306bd
font_02_sfnt_off0000f792.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF792 4324 bytes
SHA-256: b50a2106bf82917db0cd3cf88f63c5e8cc3298b343ace5cffc591b35df33d24c

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