Malicious PDF — malware analysis report

Static analysis result for SHA-256 9cd96f978eb0f0ea…

MALICIOUS

PDF

47.5 KB Created: 2020-10-14 16:42:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: adf05f65edda436b6659b1e36a29f830 SHA-1: 215818a05bcea5ce1a957696fb4fa7477ffc117c SHA-256: 9cd96f978eb0f0eace0dab76c28434fffe457f18a8c2a153739ac3fc92f2dcce
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://cctraff.ru/pify?keyword=family+members+worksheet+for+grade+1+pdf In PDF document text
    • https://site-1036785.mozfiles.com/files/1036785/68571538510.pdfIn PDF document text
    • https://site-1037267.mozfiles.com/files/1037267/96388369282.pdfIn PDF document text
    • https://site-1040131.mozfiles.com/files/1040131/wemifusoguravepudun.pdfIn PDF document text
    • https://site-1041579.mozfiles.com/files/1041579/86686073662.pdfIn PDF document text
    • https://site-1036811.mozfiles.com/files/1036811/gogafikozopex.pdfIn PDF document text
    • https://site-1040438.mozfiles.com/files/1040438/39747288621.pdfIn PDF document text
    • https://site-1038948.mozfiles.com/files/1038948/voxolukatoxakerunilok.pdfIn PDF document text
    • https://site-1041405.mozfiles.com/files/1041405/91733141056.pdfIn PDF document text
    • https://site-1043576.mozfiles.com/files/1043576/97838276430.pdfIn PDF document text
    • https://site-1041381.mozfiles.com/files/1041381/jagoluledo.pdfIn PDF document text
    • https://site-1039490.mozfiles.com/files/1039490/274494027.pdfIn PDF document text
    • https://site-1041169.mozfiles.com/files/1041169/37175148179.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366057/normal_5f86f5af2306c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366022/normal_5f870045c29fb.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/70c00646-8a7b-4700-b5ef-dc43707e0126/jazarodonedit.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/d047b6f6-c693-4bc9-8772-6a5df493bc50/2765288314.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/e2964c81-9838-4bcd-9fdf-3d56997e8db6/23908287478.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/8cd66c26-9dcc-4388-a23b-b0fa5d83e31d/zabekawi.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/236e5c8a-442a-45dd-bb0c-aaeafcbf6c18/vinip.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/447cb033-4a97-4bb3-937a-53c57da85fd1/tuxumawuzesipope.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7007e8ae-7863-4524-97d5-d5521e7255d5/kejusowamuwif.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/0d2f6837-933c-4b33-8b03-80d93bc3ed26/13249234822.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/f4543f13-ee71-49c6-923c-4a3a0087568f/gafekimaxelawipajale.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8c6bbcc-3e08-4b95-ba54-0a2a338ea0cd/zafafidetopixox.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_off00007826.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7826 5860 bytes
SHA-256: 0cae4ebf0c02615786df46331d7fcfaee514139f8d3074fab386d78a918c06d5
font_01_sfnt_off00008c13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C13 10560 bytes
SHA-256: 12f7605dfbf6a7d1231a88206bf5d20d7c1b61627b93c7b11f659f5f31c9fa0f

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