Malicious PDF — malware analysis report

Static analysis result for SHA-256 f6f76d914143e749…

MALICIOUS

PDF

68.9 KB Created: 2020-10-18 05:28:09 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-17
MD5: 31d2a05d8f8e64185a6f5719d7428b1f SHA-1: f482e253b596692b9180680059b65e4638550d6a SHA-256: f6f76d914143e7492176c2ed84518804961692cb04d0a46e5a896c1510b2c8d1
134 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.
  • 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.
  • 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://ggtraff.ru/strik?keyword=downloading+ruining+music+industry In PDF document text
    • https://cdn-cms.f-static.net/uploads/4368240/normal_5f87e36a30d8b.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367624/normal_5f88c0773305e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4374177/normal_5f8979a8cb21a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365653/normal_5f8722875c6a1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365575/normal_5f8ba775a593f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379616/normal_5f8a7b9954ba1.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365594/normal_5f89e180d0025.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369773/normal_5f8ab6cf4243e.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367648/normal_5f876689865ac.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369920/normal_5f8b730d698ce.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365525/normal_5f88ad91bd688.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366324/normal_5f8b7dec1d7ea.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366033/normal_5f8b78e9c7627.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366348/normal_5f8745fa0465c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4372719/normal_5f8b5d2093e29.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4366043/normal_5f87855c0ef5a.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368248/normal_5f8855c7ec327.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4382793/normal_5f8b67dfd3d5c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365580/normal_5f873d805b123.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368485/normal_5f8b5c26da4fe.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369306/normal_5f880b8e0601f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365599/normal_5f89321d54628.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369663/normal_5f8b76df1f91f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4371258/normal_5f891f84d11d4.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn 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_off0000c2ea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC2EA 5452 bytes
SHA-256: 7c833f50cfb897a3786b5bf2a7dfc9103797d38702b1f943eec30ab2f8fee68b
font_01_sfnt_off0000d573.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD573 15552 bytes
SHA-256: 51602247430014ba981177a09aeec8a8c43c04fcdb3792b175926802ca58f5bc