Malicious PDF — malware analysis report

Static analysis result for SHA-256 ff5cd548ec9edb23…

MALICIOUS

PDF

66.7 KB Created: 2021-03-03 03:25:13 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 6ae5d81c304226a1f713b32b7ae30d60 SHA-1: 051eb8662b8774f35b4acb9f030725cd6bda160c SHA-256: ff5cd548ec9edb2393b4f41066ecb148b4098c1afaa94e9343e2a23f9af0c167
236 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 7

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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.
  • Browser extension / update installation lure high SE_BROWSER_INSTALL_LURE
    Document tells the user to install a browser extension, plugin, viewer, or browser update to view content — a common social-engineering path for credential theft and malware installation
  • 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://baarspo.ru/award?keyword=sentry+safe+walmart+review PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4481520/normal_6033c37057a97.pdfIn PDF document text
    • https://nenawopoweso.weebly.com/uploads/1/3/1/4/131406478/tamoravided.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4447251/normal_6035f6fd15000.pdfIn PDF document text
    • https://cdn.sqhk.co/wuwoxegolewa/zZNtXgc/forbes_magazine_2020_november.pdfIn PDF document text
    • https://ludexibof.weebly.com/uploads/1/3/4/6/134638297/bufavisu.pdfIn PDF document text
    • https://cdn.sqhk.co/lixipadiwel/jhEghic/cute_cartoon_wallpapers_free_download.pdfIn PDF document text
    • https://cdn.sqhk.co/matelasoguje/Xxcn9JW/wipexoweguxosifizaxozixiz.pdfIn PDF document text
    • https://cdn.sqhk.co/dediwifime/gihiFa2/lafawulobaz.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393193/normal_602d0f7a5971e.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/fasudikek/the_missing_piece_meets_the_big_o.pdfIn PDF document text
    • https://s3.amazonaws.com/vavabi/sopikovotegoze.pdfIn PDF document text
    • https://s3.amazonaws.com/muxegeza/virevujajekafixuxumov.pdfIn PDF document text
    • http://nojikigor.myartsonline.com/use_a_geometric_formula_to_evaluate_the_integral_calculator.pdfIn PDF document text
    • https://s3.amazonaws.com/gurafoga/batman_logo_wallpaper_4k.pdfIn PDF document text
    • https://s3.amazonaws.com/gotenukevepunin/51403143939.pdfIn PDF document text
    • http://kivozusemu.atwebpages.com/7912728929.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_off0000c759.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC759 5268 bytes
SHA-256: bd46b8f065303a1490213abb841e0ffb06768c9fa379304fb24064082c689aec
font_01_sfnt_off0000d94c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD94C 10364 bytes
SHA-256: 745328c120fa27e0ff360137142d1e245187cdb6f74e1f0ccb9af8437c37e1f9

Open this report in the interactive analyzer, or submit your own file for analysis.