Malicious PDF — malware analysis report

Static analysis result for SHA-256 0952f8002c6610f6…

MALICIOUS

PDF

42.7 KB Created: 2020-10-15 16:33:21 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: e4b00ee26c7aeb8c4f4a3f55a75b07da SHA-1: 62b2a4ef2108c5fc4811c4840833de4541989a6b SHA-256: 0952f8002c6610f656084a791e2242076ddc4559b3912310fb6e938561a590f0
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://gettraff.ru/123?keyword=instrumen+akreditasi+puskesmas+terbaru+pdf In PDF document text
    • https://riwisasivituw.weebly.com/uploads/1/3/1/0/131070703/2ef8772951d488.pdfIn PDF document text
    • https://xebikazogede.weebly.com/uploads/1/3/2/7/132740990/9165930.pdfIn PDF document text
    • https://disaxugotusineg.weebly.com/uploads/1/3/1/8/131871710/zunejafanipe.pdfIn PDF document text
    • https://tipefejiri.weebly.com/uploads/1/3/0/9/130969755/koremewazenu-geginixer-dukoketuvaverux.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f8715642fe35.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369163/normal_5f87e1db78161.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366360/normal_5f871e5a43561.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368225/normal_5f87bcf0d27ad.pdfIn PDF document text
    • https://ridolagu.weebly.com/uploads/1/3/0/7/130775195/8604030.pdfIn PDF document text
    • https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/055b5834.pdfIn PDF document text
    • https://zoxuzuxebexot.weebly.com/uploads/1/3/0/9/130969059/9051060.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366989/normal_5f87fa1556ee4.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366367/normal_5f8823dc86a1c.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/5cd54cf48e.pdfIn PDF document text
    • https://jatorogerujew.weebly.com/uploads/1/3/2/7/132710569/1302795.pdfIn PDF document text
    • https://gonerogad.weebly.com/uploads/1/3/1/4/131438616/2773308.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/bcbabdb8-c62b-4ab0-b343-18e8149ae436/58174186159.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/75d1ec8c-4c4d-4234-b82d-edde6b95182e/17557146748.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/01c66540-42fe-4b4d-876a-5a4711bde1a2/96954169821.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_off000069e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x69E8 5296 bytes
SHA-256: 8159a52dfa7086c3415dc2cde985b5845a11073fedde553fb7db50a24b385cb5
font_01_sfnt_off00007bc5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BC5 10036 bytes
SHA-256: 533d23637b785b80e0b4705056f30485d36b97f207ef0ddd5a27809236ab224a

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