Malicious PDF — malware analysis report

Static analysis result for SHA-256 ad07391d3b093d52…

MALICIOUS

PDF

68.0 KB Created: 2020-12-21 13:25:24 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-02-23
MD5: 30aba88d02f3a4ed3cf834a48bcf5d10 SHA-1: 93c5ce273be892a917250c6dd690a2f71987cec2 SHA-256: ad07391d3b093d52c1339a8cd578c27233cf745f5e17db6a4cda3b6f9f8348b3
194 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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://cctraff.ru/wb?keyword=monster%20hunter%20world%20mods%20ban In PDF document text
    • https://cdn-cms.f-static.net/uploads/4472198/normal_5fb9e20301088.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4383571/normal_5fda67469e3ef.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365662/normal_5f9bbd13f0578.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4373509/normal_5fa7fccbf41a3.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4423155/normal_5f9af74fbed02.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4368238/normal_5fb42bc5085d0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4488822/normal_5fc53c50618e0.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4496818/normal_5fc56aa10543a.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://static1.squarespace.com/static/5fc0f22ee5c7695ca99bddc9/t/5fd12c1763b3d55ecb818f6e/1607543832570/65053669539.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/993a9e31-716c-48d3-96a9-c261e3fe70eb/melon_hack_apk_download.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc55805ea4a794d5662b1b8/t/5fca4767ee6dcf7e363ee0dc/1607092073845/child_care_licensing_jobs_california.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/5672aefa-6d89-4c10-8295-924f88bcdf8b/82066343102.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/da3340d2-27e3-4a94-b02e-5d2e2ca3326e/xogowukijamuvipigudekot.pdfIn PDF document text
    • https://uploads.strikinglycdn.com/files/c8a1b16b-502f-4e85-964f-01b413f48b28/punuvovirukulo.pdfIn PDF document text
    • https://static1.squarespace.com/static/5fc53334a13a450bab107d72/t/5fc887dc6031f473862281b6/1606977501050/soccer_world_cup_qualifiers.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_off0000ccea.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCCEA 5300 bytes
SHA-256: 728585ad0e9bd13344b517737ff4a6e8a782f73299580167c407f017fe80649d
font_01_sfnt_off0000ded9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDED9 10848 bytes
SHA-256: 6af20e1b6a49196c10c3ea07cf2e749645e9901fc7f4ceb33bdfb2a8cb09e387

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