Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d32bc3e10f0be2f…

MALICIOUS

PDF

43.8 KB Created: 2020-10-06 11:01:12 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: af1066384f4bbe6cc2b3bcca0d797951 SHA-1: a3c1050169255c322ab8fa0a305e84e053d6841e SHA-256: 0d32bc3e10f0be2fa2800e15f611d0bde68d8e8c4881ebf143b12314c5aa4d1d
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/strik?keyword=morphology+and+syntax+noun+pdf In PDF document text
    • https://site-1036881.mozfiles.com/files/1036881/4011399618.pdfIn PDF document text
    • https://site-1036728.mozfiles.com/files/1036728/8924023790.pdfIn PDF document text
    • https://site-1038753.mozfiles.com/files/1038753/lofavamojajopa.pdfIn PDF document text
    • https://site-1040282.mozfiles.com/files/1040282/sipabuwasipuwusinu.pdfIn PDF document text
    • http://files.broadwaypinups.com/uploads/1/3/0/9/130969699/2e884f.pdfIn PDF document text
    • http://files.smsyates.com/uploads/1/3/0/8/130874394/vumovuratubasawivaz.pdfIn PDF document text
    • http://bovuru.columbiakingsmen.com/uploads/1/3/1/3/131381369/42a58d1e.pdfIn PDF document text
    • http://files.allyjadeart.com/uploads/1/3/2/6/132696067/1489638.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://cdn.shopify.com/s/files/1/0436/5467/6645/files/92374759149.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0492/0111/9398/files/34689403781.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/90e7e0f9-8bca-4f92-b0e8-d89d7d89f02a/gafofijipomaregevov.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/3f0626b8-b3e9-4d3c-98a3-36824c419f8d/fubexomomeposolazexid.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/20437310-7dbf-4e50-ae47-cc243fbb84f4/dajukixararerape.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/7a32a99f-765a-44a3-a62b-6c2f0d1fb8b9/90292604549.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/1465a3f6-4e58-46c5-9e10-a56e367e17eb/vowozisavozifuwexojuxexav.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_off000060d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x60D9 5196 bytes
SHA-256: c2b590f5aa255fdce92f47df10d1196c6fba59e3a63f0d611245125ab419cd16
font_01_sfnt_off00007281.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7281 9896 bytes
SHA-256: cf99bfd8120629d32edee0086b2ff1d9913e58cc3d74633405b57f55c6b6a8c4
font_02_sfnt_off0000944b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x944B 4324 bytes
SHA-256: d1f4a20f0e35a0564be54678b929bb8c711862c507f070c2b9a6abea8daf4378

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