Malicious PDF — malware analysis report

Static analysis result for SHA-256 9727fb05ee2bf6ab…

MALICIOUS

PDF

56.4 KB Created: 2020-11-08 22:01:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-23
MD5: 35715990ca0497198c2564876049c2e3 SHA-1: 5fd2457421e7d769b745c09852ce545014f8a396 SHA-256: 9727fb05ee2bf6abc5b65c7e769f2ca90cc760e427f07f26cec5d21ca0392101
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://traffine.ru/123?keyword=percent+composition+worksheet+answer+key In PDF document text
    • https://xepebujusu.weebly.com/uploads/1/3/4/3/134319702/bejufiwubekugafis.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4384145/normal_5f8e01d7e8d9d.pdfIn PDF document text
    • https://juzugimigiroteg.weebly.com/uploads/1/3/2/3/132302883/9039453.pdfIn PDF document text
    • https://gamupizesusaza.weebly.com/uploads/1/3/1/3/131398140/vapujenipujij_lutam_jasixajepubese_lumedilozen.pdfIn PDF document text
    • https://boguvetasitob.weebly.com/uploads/1/3/1/3/131380850/88bd66a85400a.pdfIn PDF document text
    • https://jonoxuxiwef.weebly.com/uploads/1/3/4/3/134314506/vipixaguba_ziwomovinud_venarotumutumaw.pdfIn PDF document text
    • https://gorokawuse.weebly.com/uploads/1/3/4/4/134489158/4858348.pdfIn PDF document text
    • https://kekerisasil.weebly.com/uploads/1/3/0/7/130775365/zodutobo_mevibores.pdfIn PDF document text
    • https://jazaxalik.weebly.com/uploads/1/3/4/4/134488577/9700923.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/b02756c1-0bb1-403c-a8a1-cae8a9074f5e/zimugemifome.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_off00009442.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9442 2828 bytes
SHA-256: a17885b4fd577e0298a64705d5055d2ac7c2363fd7008e9cf236b3df412a17d8
font_01_sfnt_off00009e3c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9E3C 5400 bytes
SHA-256: a1565cdcbce635e372d40d9bf64b7d4e4733a0f0f630a52ddd57c95cbb16e118
font_02_sfnt_off0000b086.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xB086 9984 bytes
SHA-256: 47a84f94753213b8e139a76f43279cd2ac5e02ceaefd0fbe4640fa6b0a7ad983