Malicious PDF — malware analysis report

Static analysis result for SHA-256 b2edbd8320d3bb2e…

MALICIOUS

PDF

66.1 KB Created: 2021-02-09 02:05:57 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: 1e1f817e349a6cbdf8ad671e1ffa3ac1 SHA-1: 09b90756aca9d09a3c2157bc9e65f40113aac2ed SHA-256: b2edbd8320d3bb2e0022c6536a0c7f875045a3f46055fef37ebb37f2fb769790
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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://leonvi.ru/wb?keyword=almighty%20so%20chief%20keef PDF link annotation
    • https://verakolor.weebly.com/uploads/1/3/1/3/131379730/f04db572e18d7ca.pdfIn PDF document text
    • https://cdn.sqhk.co/pugirunosamo/jgjdjhj/sotijufad.pdfIn PDF document text
    • https://xonasuxodu.weebly.com/uploads/1/3/2/6/132681295/jotibopoleg_voxojuda_sunez_xafet.pdfIn PDF document text
    • https://wosiwimobej.weebly.com/uploads/1/3/1/1/131164223/zudamef_pumasiv_lipeke_wilirekim.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366331/normal_5fc5c9e92f1d5.pdfIn PDF document text
    • https://cdn.sqhk.co/bijukipuj/qijhiii/depajivojabekurewewolur.pdfIn PDF document text
    • https://cdn.sqhk.co/bagadogod/Nhbhfih/silent_warship_hunter_mod.pdfIn PDF document text
    • https://gadiziwit.weebly.com/uploads/1/3/1/4/131406086/warajonipesebiz_fofidises.pdfIn PDF document text
    • https://cdn.sqhk.co/fugolamudara/fiaIohc/25563760163.pdfIn PDF document text
    • https://cdn.sqhk.co/dudokirabog/ihijbjg/talking_tom_cat_game_app_download.pdfIn PDF document text
    • https://cdn.sqhk.co/pasivuzuke/gioEdQG/demew.pdfIn PDF document text
    • https://cdn.sqhk.co/jinavefajevo/dfhjjb6/mupavimetuletijitipur.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4380876/normal_5fcca099b924c.pdfIn PDF document text
    • https://cdn.sqhk.co/wunasesev/jdFjegi/15335081467.pdfIn PDF document text
    • https://cdn.sqhk.co/kavonalitego/kihjdjc/candy_frenzy_game.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_off0000c56b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC56B 5144 bytes
SHA-256: 0ba60b943c409e91e2e8cb62c6c56426b2350c4c027800d0fac85a85877fc819
font_01_sfnt_off0000d6e3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD6E3 11052 bytes
SHA-256: 345957c9eb2edc2c18f6a61d84fb008ebfc09c1a23d4bea325ebbb5ce4af2876