Malicious PDF — malware analysis report

Static analysis result for SHA-256 c7e13366c70fe9fc…

MALICIOUS

PDF

42.2 KB Created: 2020-10-29 21:19:31 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-03-01
MD5: b2b42c8dc1cb6e6dfd116e4b195ec3c3 SHA-1: fe88faae5ad3b21224ab7d62324fbf983cf83361 SHA-256: c7e13366c70fe9fca2373a4945c67687a1d8f1bc43e0267ba36891eab4ac0ed3
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://ttraff.me/123?keyword=watch+captain+marvel+before+endgame+reddit In PDF document text
    • https://waxojokizubow.weebly.com/uploads/1/3/4/4/134482073/jowanepubeb.pdfIn PDF document text
    • https://nifadajenekipib.weebly.com/uploads/1/3/4/3/134305148/girafelana.pdfIn PDF document text
    • https://xetutinafo.weebly.com/uploads/1/3/0/7/130775845/8385795.pdfIn PDF document text
    • https://lulitetuxopibol.weebly.com/uploads/1/3/1/1/131164377/dumerosivaba.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/6093794d1d31940.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4420448/normal_5f98cba822bb1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4370288/normal_5f8b1c2dcf5f2.pdfIn PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/lonevu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379387/normal_5f9ae839e06c7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366401/normal_5f874f5f413fb.pdfIn PDF document text
    • https://mesipaku.weebly.com/uploads/1/3/1/3/131383407/fapirabijifexufazun.pdfIn PDF document text
    • https://gewosawoma.weebly.com/uploads/1/3/0/7/130739201/b9cee03b2.pdfIn PDF document text
    • https://zavisedifigi.weebly.com/uploads/1/3/4/3/134316550/88f1088a7b9.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000641f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x641F 5604 bytes
SHA-256: 64bcfefc136b5021750cc421a138f3db03fc015bb4536de2caea9c3e3d2d13b8
font_01_sfnt_off00007710.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7710 10956 bytes
SHA-256: dc4463c4a159e0374227c4d977a244960e5e4651ad44194f0e8f8f6a9f9ef3ec

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