Malicious PDF — malware analysis report

Static analysis result for SHA-256 7499097869e6f0e2…

MALICIOUS

PDF

44.6 KB Created: 2020-10-17 00:36:50 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-19
MD5: 9c060bd1470a64efa7ef682f4f2c8998 SHA-1: 7440b5e94fd10963e22a2a42ff8eadcd27e0be07 SHA-256: 7499097869e6f0e2b7da8e8fd5cfdcd2f6fd6717bf48a24fdda011fbd90df3a4
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=spanish+pronunciation+practice+worksheet In PDF document text
    • https://bedizegoresupa.weebly.com/uploads/1/3/1/3/131379398/dekegu.pdfIn PDF document text
    • https://jonukejunuxesa.weebly.com/uploads/1/3/1/4/131409236/mevubime.pdfIn PDF document text
    • https://rabugotekinevod.weebly.com/uploads/1/3/1/8/131871666/riwekelurazukirafid.pdfIn PDF document text
    • https://xifobosakup.weebly.com/uploads/1/3/2/8/132815359/rijosa.pdfIn PDF document text
    • https://vuxozajuje.weebly.com/uploads/1/3/1/3/131379873/1867598.pdfIn PDF document text
    • https://lajojixuvoporor.weebly.com/uploads/1/3/0/7/130738555/2585027.pdfIn PDF document text
    • https://sepikupi.weebly.com/uploads/1/3/0/7/130738949/096fc46624a1.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/1/0498/0604/9442/files/43925070437.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/2914/2426/files/fellowes_powershred_79ci_16-sheet_paper.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0484/6931/1650/files/23218166680.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0499/4128/2984/files/vovavaxuvetib.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/36721184-1f0c-47a2-aeec-ee6c6d9219a9/fuforabafisiriwuvo.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/72df53b3-d258-4462-85fb-eb695939ac43/47800526481.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e31602a3-c271-4d06-9a6c-70cc82449930/22916034329.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/13be72e7-3517-4a34-89c4-12dd065044e9/84890743741.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e3e85edb-5a5f-40b3-914d-f4aa9d39cdc6/26744510264.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/045a9244-97f0-4e45-84db-cc5a5cdfa987/fetuxopifobum.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/9a47cd8e-8ade-41d3-83dd-a40ab27a1afb/liriloj.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/dcb76b69-a89f-469d-ad55-6c2b0c6e947e/9824620363.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4d1758fb-f301-4e20-ade6-1501d7abb6b1/39521474126.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/254dcb2a-1822-4a26-ad89-4820dc0c0edd/saliteno.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/11d8b223-d1df-4257-befb-19f3caede5b6/47641332355.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/2d16132e-ccf5-4ebd-bf17-9fd6792ac7c5/96798867471.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_off0000716f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x716F 5248 bytes
SHA-256: 95896163f29769f274b296417ffb0e2d860e4e819f78551aa980422eac54c0fa
font_01_sfnt_off0000834a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x834A 9780 bytes
SHA-256: 0e9672fa02e69a8548cd7a67d3db0c6df812e1e5f744368239bee9046a5ba330