Malicious PDF — malware analysis report

Static analysis result for SHA-256 ef47ebd60b8e2b41…

MALICIOUS

PDF

50.0 KB Created: 2020-11-06 14:52:30 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 0e4189f5d4be9e19dadba2a8cc909d4f SHA-1: c108661d3c74e2f39185b494f66ecfa9cfe1e219 SHA-256: ef47ebd60b8e2b4197e7f4c00b05eb82b7c5fd77b23eb23ce25dbd397ab19c2b
76 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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://traffset.ru/123?keyword=what+does+death+smell+like+in+humans PDF link annotation
    • https://winupape.weebly.com/uploads/1/3/4/5/134500155/45955d20d76b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4414847/normal_5f9e44930cd2e.pdfIn PDF document text
    • https://noxepelobisuse.weebly.com/uploads/1/3/1/8/131871648/ea24a6.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447646/normal_5fa3c83d25814.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366375/normal_5f875333e29c5.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4377905/normal_5f8b5c544cb32.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368970/normal_5f8f8621dfbd0.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367940/normal_5f8ed73cbf27c.pdfIn PDF document text
    • https://wozofawado.weebly.com/uploads/1/3/0/8/130874325/a03f2d94471d5a.pdfIn PDF document text
    • https://gamorajemusuro.weebly.com/uploads/1/3/4/3/134316050/6438220.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/4e9dd79e-7d98-4183-aa02-8f48a090d849/kasove.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/b194cb5a-f422-42cb-9a12-9399571f25fc/nomusigulovuxug.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/324f4e0a-a5d5-40a8-883e-0d212554e94a/45181710125.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_off0000840f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x840F 5044 bytes
SHA-256: fa8449e163c5b3e65cc9d675be3c10b3986c4c5dfda47bc1757c37bf5fb93988
font_01_sfnt_off00009519.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9519 11448 bytes
SHA-256: 75bdbabb95cb80598f70a7ff44a9f6038e7245bd016fc4ca1430fc24c21a744e