Malicious PDF — malware analysis report

Static analysis result for SHA-256 725c10ce95edf978…

MALICIOUS

PDF

46.3 KB Created: 2020-09-30 14:31:59 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 3aa453a271f53d74f77e9e4056d25573 SHA-1: 26770fcf9a9359ac15d35a51b087ade51f090c51 SHA-256: 725c10ce95edf9786b54de48bf2a916a1696a8036f31f30b1717360892b45e54
124 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • 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 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/strik?keyword=cacing+adalah+pdf In PDF document text
    • https://site-1037839.mozfiles.com/files/1037839/rakumuradikufup.pdfIn PDF document text
    • https://site-1036997.mozfiles.com/files/1036997/9924843962.pdfIn PDF document text
    • https://site-1036852.mozfiles.com/files/1036852/dutugovexuterugopadobid.pdfIn PDF document text
    • http://povezev.oteromuseum.org/uploads/1/3/2/6/132696483/jutexodavasivin_mekivekedi_nidekowubusubap_bivavagogapi.pdfIn PDF document text
    • http://files.ginosdeli.info/uploads/1/3/1/4/131406520/9588316.pdfIn PDF document text
    • http://files.rafikibiblestudy.org/uploads/1/3/0/7/130776791/7adb367bc15.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/1/0427/7351/2359/files/mulabunufudugenubufosumeb.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0437/7418/1534/files/42890292187.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0434/6452/3926/files/79843244872.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0432/5815/1072/files/catgut_embedding_acupuncture.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/0926/9156/files/32537947459.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7e5b7731-16f5-4b9a-bfce-def7397aa9f1/64463474291.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3b162d5c-c65f-4627-9a93-778cb1e2239f/3015746011.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/81b4ea0b-f6d8-4804-aa9d-c677e4c80d8f/79356570453.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_off0000790b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x790B 5048 bytes
SHA-256: 7cde98f1c276ca1bf0841dd4b7f39501d43752df05fe2ce9d0a7118d44aaef3b
font_01_sfnt_off00008a36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A36 10116 bytes
SHA-256: e0a400841e40413d6609029fdb17d504aaa2d89a4ec18aef620a3d5e7333b54c

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