Malicious PDF — malware analysis report

Static analysis result for SHA-256 34111d93cf5f33fe…

MALICIOUS

PDF

43.0 KB Created: 2020-10-15 18:10:31 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 1d2cf871fc6c6a873a0dad963b6c7c3f SHA-1: bcf0524299f63868ca502f0beb6c3d17ecf01226 SHA-256: 34111d93cf5f33fe3d635f1c45d7b8a7de1e95540ad022eb1f946ddfa87563c3
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://ggtraff.ru/123?keyword=cambiar+fecha+foto+android In PDF document text
    • https://site-1040766.mozfiles.com/files/1040766/javusejov.pdfIn PDF document text
    • https://site-1041615.mozfiles.com/files/1041615/23023244589.pdfIn PDF document text
    • https://site-1042284.mozfiles.com/files/1042284/57323102564.pdfIn PDF document text
    • https://site-1036881.mozfiles.com/files/1036881/58559468856.pdfIn PDF document text
    • https://site-1039509.mozfiles.com/files/1039509/nekireselumivumiruwe.pdfIn PDF document text
    • https://jizonuwuko.weebly.com/uploads/1/3/0/8/130814311/5945091.pdfIn PDF document text
    • https://nudojafobedem.weebly.com/uploads/1/3/1/3/131379550/c6f1d674735551.pdfIn PDF document text
    • https://povutepumik.weebly.com/uploads/1/3/2/7/132741486/waxuv-lekifijetajo-xarivozususoj.pdfIn PDF document text
    • https://gimejexoxixaza.weebly.com/uploads/1/3/1/8/131872185/kirorafagosox.pdfIn PDF document text
    • https://dutitujazekap.weebly.com/uploads/1/3/0/8/130814390/36ce75ac.pdfIn PDF document text
    • https://site-1039478.mozfiles.com/files/1039478/30673172684.pdfIn PDF document text
    • https://site-1041086.mozfiles.com/files/1041086/50102523921.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/2524/4065/files/49348963114.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0483/6242/2421/files/cissp_shon_harris_7th_edition.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0372/4455/files/57858926512.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/42f0d0ca-62f2-41a2-9543-415f0c5ead21/kuwumep.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e80c083f-dd28-4b46-8aa9-7995e3029a8d/59620964930.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/44c0066d-68cb-4601-bfbc-70e6e47d3111/zimunevalitete.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/12bc1ac7-b946-4616-bd9b-5c8f72970346/39506767857.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0485/1620/2651/files/aws_developer_book.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0500/4079/9392/files/muzukujubukarunos.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_off00006948.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6948 5096 bytes
SHA-256: e3ac4f78e08cc11a4265d0203bd73b5273075be5f040ef63f526940cbaec856a
font_01_sfnt_off00007a74.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A74 11396 bytes
SHA-256: f14910bd9e42702c9588ed337e7676f019807e89b96342739ade40b25de3accf

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