Malicious PDF — malware analysis report

Static analysis result for SHA-256 6262ea786ed39be0…

MALICIOUS

PDF

43.5 KB Created: 2020-09-30 13:30:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 408ca3d84b73edba890b1d0eca7a5775 SHA-1: 686f980c8222192800c03a4e0cb1bd35aa861bec SHA-256: 6262ea786ed39be071de5204497b5c34938d76dc92e7f544fe2e3e88816b13f6
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=file+pdf+ke+jpg In PDF document text
    • https://site-1036729.mozfiles.com/files/1036729/77764471412.pdfIn PDF document text
    • https://site-1038898.mozfiles.com/files/1038898/50597549458.pdfIn PDF document text
    • https://site-1036977.mozfiles.com/files/1036977/bepumumi.pdfIn PDF document text
    • https://site-1038909.mozfiles.com/files/1038909/sixap.pdfIn PDF document text
    • https://site-1036946.mozfiles.com/files/1036946/javeleputikomepobob.pdfIn PDF document text
    • https://site-1036881.mozfiles.com/files/1036881/dotojuw.pdfIn PDF document text
    • https://site-1036920.mozfiles.com/files/1036920/wexaboto.pdfIn PDF document text
    • http://files.crfgoldens.com/uploads/1/3/1/4/131453615/7671536.pdfIn PDF document text
    • http://fopoki.thegrownupsbenefit.com/uploads/1/3/1/6/131606539/11946.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://uploads.strikinglycdn.com/files/a76f4ffe-d216-4d0f-bafa-72c172a17f98/nisewepupanabisapet.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/055e99db-75e8-4206-9690-fcdd7dad659e/7033729455.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/83a4258a-5e60-4192-886c-a456421268f2/baturabodalokoxefirabenat.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d2127071-3d48-4b92-a5ce-5619753e8e34/vekozilip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/4b817d18-e82e-4d75-8765-da1bdc70b7f7/mufulixaderalutepajo.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000622b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x622B 4312 bytes
SHA-256: a59023031fdcb0066e7bb075f0df1a949dcb100cc7fb948ca17333529d885625
font_01_sfnt_off000070de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x70DE 10128 bytes
SHA-256: c36a9ae31b6e665682ca19f0327a3c150d638717372ca3e50ef6d414db330cfd
font_02_sfnt_off0000937f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x937F 4324 bytes
SHA-256: 05d2457133b820fa77aa358e30e9acfbad3f04c46ced9a37296d9311117db176

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