Malicious PDF — malware analysis report

Static analysis result for SHA-256 b6d3ad897c06231f…

MALICIOUS

PDF

50.3 KB Created: 2020-10-30 21:35:59 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: f629f5e1160ab5610a7bdd2b14d2aaf0 SHA-1: 528a80bf29cae668eab2cf7e17556bb740017003 SHA-256: b6d3ad897c06231ff7d2da02de484bfd45e7c2a36f5da36412d3e4169ade93bf
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/aws?keyword=hymn+to+aten+psalm+104 In PDF document text
    • https://kokexofagisukop.weebly.com/uploads/1/3/2/7/132710589/a088a01.pdfIn PDF document text
    • https://sovopubi.weebly.com/uploads/1/3/0/7/130775052/lepuzisukawe_judul.pdfIn PDF document text
    • https://lumozilupive.weebly.com/uploads/1/3/4/3/134336046/1492893.pdfIn PDF document text
    • https://xedaliwim.weebly.com/uploads/1/3/1/4/131454603/8678923.pdfIn PDF document text
    • https://fiselowozol.weebly.com/uploads/1/3/4/3/134366189/9430231.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/31e6f299-eb0f-457d-9c4e-2d501508d4f1/difolusajanamu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/ada1cba7-8cf2-490c-b917-aae9518a590e/mujatuludivazufejelesu.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/29c6bfcb-d11f-44af-a42d-3a91af903302/6022705783.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d5720e1-201a-445d-ab83-b3c0489d61aa/5s_posters_free_download.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dc223e55-6dae-4842-a159-64a683832e5c/magudatuk.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/bea7c389-e675-4d01-9be8-cf1f119b024a/dining_room_and_banquet_management_4.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0498/6821/0343/files/certificate_of_service_form_massachusetts.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/a5e8493b-f290-4a5f-acc9-40a6a758f4ac/35323862618.pdfIn PDF document text
    • https://s3.amazonaws.com/sabobenuwe/old_norse_mythology.pdfIn PDF document text
    • https://s3.amazonaws.com/nitajosasa/assessment_centre_guide.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_off000087f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87F8 5212 bytes
SHA-256: 6d97d20ace17345a37343e209ba8d047365666031a35a08618a82dce1bed23c2
font_01_sfnt_off000099b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99B0 10088 bytes
SHA-256: 0117b9297e1d85b8f801c46d7f40a34c199f5fdc6c81fb18c18bbc672ab3e160

Open this report in the interactive analyzer, or submit your own file for analysis.