Malicious PDF — malware analysis report

Static analysis result for SHA-256 3d6d4c89d1ab9542…

MALICIOUS

PDF

39.4 KB Created: 2020-10-17 01:48:42 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 219200efed65dedc382e1934efdbbab6 SHA-1: 31e72a0a6057366b7479c811cfd52caf70853de0 SHA-256: 3d6d4c89d1ab954258b3e6f119e538ad903b0c783560a8f5bf3869c1db59bfcf
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://cctraff.ru/123?keyword=powerscore+reading+comprehension+bible+gmat+pdf In PDF document text
    • https://dejuxowiku.weebly.com/uploads/1/3/0/7/130738850/bafebo-lujato-dozoxigufi-fofaxudobisexox.pdfIn PDF document text
    • https://rezizeme.weebly.com/uploads/1/3/0/7/130775554/lowibap.pdfIn PDF document text
    • https://pejapuvurexoku.weebly.com/uploads/1/3/1/6/131636728/misovunopevowiz.pdfIn PDF document text
    • https://lixaworone.weebly.com/uploads/1/3/1/8/131871871/d2f1016926b4.pdfIn PDF document text
    • https://wetuxabo.weebly.com/uploads/1/3/0/8/130873937/c7e5081bc6b95.pdfIn PDF document text
    • https://ninukiwipovesot.weebly.com/uploads/1/3/0/9/130969879/9628834.pdfIn PDF document text
    • https://kurikezexiwu.weebly.com/uploads/1/3/0/7/130775092/litisasevim.pdfIn PDF document text
    • https://sisaseno.weebly.com/uploads/1/3/0/7/130776680/6dd1a22026ad06e.pdfIn PDF document text
    • https://genigudepa.weebly.com/uploads/1/3/1/0/131070712/ff06dfdf.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/137dbbea918.pdfIn PDF document text
    • https://zevigetadafuwun.weebly.com/uploads/1/3/0/9/130969942/3cdc0bcb9c5b.pdfIn PDF document text
    • https://jawowigo.weebly.com/uploads/1/3/0/7/130774982/8260600.pdfIn PDF document text
    • https://pituluwo.weebly.com/uploads/1/3/1/4/131437949/10994475.pdfIn PDF document text
    • https://babinekisifuve.weebly.com/uploads/1/3/2/6/132696104/numil.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/604bd07c-4047-4e2e-b084-55767913a139/10149233921.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/86392789-cd6d-4b8e-bbb4-1c0ea6f5d5ba/fagiwesejowebew.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0266/7724/8192/files/zexelu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0481/6148/9049/files/carton_of_newports.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0493/1131/8182/files/science_process_skills_video.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2406/3392/files/zorumetafijadivinoburop.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0496/0223/2484/files/neletokusubifowoju.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_off000058d4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x58D4 5800 bytes
SHA-256: ba6f089bb1a08cbfe54ef4d59805691e76b5f9130d17eea892832cf98e3c3843
font_01_sfnt_off00006c73.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C73 10464 bytes
SHA-256: 70c1ba5209461f05c9757e783ac44fee0b7acde9d9cca4a807e3a3fded959132

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