Malicious PDF — malware analysis report

Static analysis result for SHA-256 15ddc08632012bf0…

MALICIOUS

PDF

47.2 KB Created: 2020-10-15 06:29:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: ce2e4a3e8a73410d5e1fa06dfffbb7d6 SHA-1: b7d962ab1375552a9df585e2ed1f8a0f5a8cb695 SHA-256: 15ddc08632012bf0aec7414e0a79b4721476b7e41fcdb3e31eae85e5112c74a0
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://gettraff.ru/strik?keyword=sketchbook+pro+apk+4.1.14 In PDF document text
    • https://site-1043256.mozfiles.com/files/1043256/xalanivorari.pdfIn PDF document text
    • https://site-1042343.mozfiles.com/files/1042343/xeremuru.pdfIn PDF document text
    • https://site-1038337.mozfiles.com/files/1038337/xodoxum.pdfIn PDF document text
    • https://site-1037920.mozfiles.com/files/1037920/xewaf.pdfIn PDF document text
    • https://site-1038601.mozfiles.com/files/1038601/76475584010.pdfIn PDF document text
    • https://site-1037865.mozfiles.com/files/1037865/24052646069.pdfIn PDF document text
    • https://site-1048190.mozfiles.com/files/1048190/72768888502.pdfIn PDF document text
    • https://site-1040262.mozfiles.com/files/1040262/kuzojopojo.pdfIn PDF document text
    • https://site-1037156.mozfiles.com/files/1037156/28992122190.pdfIn PDF document text
    • https://vopevejefed.weebly.com/uploads/1/3/1/6/131606133/dovones_davazulaw_garufivotada.pdfIn PDF document text
    • https://biwugina.weebly.com/uploads/1/3/1/1/131163984/nipexaxabata_xelovode_diwudizatuzuka_ronopajejuj.pdfIn PDF document text
    • https://pivozedotafi.weebly.com/uploads/1/3/1/0/131070355/b48d71.pdfIn PDF document text
    • https://fuparududewon.weebly.com/uploads/1/3/1/8/131856041/4e8070c7e49995.pdfIn PDF document text
    • https://dosedupuwosiwoz.weebly.com/uploads/1/3/0/7/130776272/suliterapame.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366337/normal_5f87224e5e6d1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366364/normal_5f879f118d487.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366020/normal_5f87729b49097.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365552/normal_5f8730322c7dd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366035/normal_5f87aff18a8cd.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365655/normal_5f8712919f5ae.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367632/normal_5f8787b101116.pdfIn PDF document text
    • https://site-1038920.mozfiles.com/files/1038920/fomojuganuv.pdfIn PDF document text
    • https://site-1038499.mozfiles.com/files/1038499/soxopalupitokuz.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
    • 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_off00006e01.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6E01 4924 bytes
SHA-256: 4f5d584e938ae4104254391ddc58ef7cf1ebe48dd298857434b2fce7dfc4927b
font_01_sfnt_off00007ed8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ED8 10056 bytes
SHA-256: f97078eeeed48645f62adc4795bc0539169b595c11411b7c09c01c957a55308e
font_02_sfnt_off0000a0fe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA0FE 4324 bytes
SHA-256: 1062cd8ddf90f4344fa193b395386d5669df1a952e5759311ca261a71931f361

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