Malicious PDF — malware analysis report

Static analysis result for SHA-256 a10fc5580819a6e0…

MALICIOUS

PDF

46.0 KB Created: 2020-10-20 14:45:15 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 6d4624ae5d6f661ff0e03e3fe1c80d02 SHA-1: 6d265d23c0a80d358b0035ac5cab1b191b6ff5e5 SHA-256: a10fc5580819a6e0921342d4305b1ca1729ff57328d602bf0dff8e1e9fd057ae
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.link/123?keyword=powerpoint+android+vs+windows In PDF document text
    • https://vozunutav.weebly.com/uploads/1/3/0/9/130969695/tugokeg.pdfIn PDF document text
    • https://molisemopum.weebly.com/uploads/1/3/1/4/131437834/mororuw.pdfIn PDF document text
    • https://mizunawakore.weebly.com/uploads/1/3/1/4/131406356/3160057.pdfIn PDF document text
    • https://mamexobupelo.weebly.com/uploads/1/3/1/3/131383482/miniketuponapa.pdfIn PDF document text
    • https://keniwuki.weebly.com/uploads/1/3/1/4/131483234/3cb113af6.pdfIn PDF document text
    • https://razesupimo.weebly.com/uploads/1/3/2/8/132815812/najumekixuvine.pdfIn PDF document text
    • https://putigazabikikim.weebly.com/uploads/1/3/2/6/132682718/04d4d.pdfIn PDF document text
    • https://zesopupejilit.weebly.com/uploads/1/3/0/7/130738861/zapadobe.pdfIn PDF document text
    • https://digonowokeke.weebly.com/uploads/1/3/1/8/131856318/vejosopamitido.pdfIn PDF document text
    • https://lipowuripipu.weebly.com/uploads/1/3/1/3/131378852/ninanikixaleza_fidunagi_ruvetafabona_nojaropef.pdfIn PDF document text
    • https://jovikuveditowe.weebly.com/uploads/1/3/0/8/130874612/lurigedelunes-kovepuli-wavuzatiwuroduk-zumunu.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/7971455.pdfIn PDF document text
    • https://vilukenuxe.weebly.com/uploads/1/3/2/8/132814007/pelupe.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/b2a3fa6f-a0e2-4647-b48f-0082eec06baf/jujogoripadefuwo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2f7dc342-9ffc-43d7-898d-861032d7a738/151751852.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d467d593-21fa-4c0e-9c14-7519f745479d/vadojefafawikuvupimudib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/68e3da33-0105-48d3-8400-ac921a77927c/kifubukutezuzowoxina.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b460cf3-62d7-4bcb-83cf-77948c5d0ccd/57507665650.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20a9839c-a2e0-4413-b096-7642c7d707d1/22328175372.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e415600e-fd69-4caf-b942-c631ee0e404f/lelavenivubonum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d6999b94-71b2-46ff-bbc5-83d96b61f30c/dukurobedibewoxidunidapu.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_off000068de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x68DE 5072 bytes
SHA-256: 9e3cc2e2964278bca8639590c38bc1744831ef42baa0983a24d08d2fe774b289
font_01_sfnt_off00007a3d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A3D 14736 bytes
SHA-256: 32b3980b39ed1b11ba2015eee611633f965303c91066e2e45e41c0b3ebc6b83e

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