Malicious PDF — malware analysis report

Static analysis result for SHA-256 445e0158ee3dc9a0…

MALICIOUS

PDF

69.9 KB Created: 2021-02-24 09:44:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 84330fae6394af3ae933833f0589558e SHA-1: ce50e9a585c7f1c22bdddcc90b7212c2e0b38fa9 SHA-256: 445e0158ee3dc9a00a5a823513a3591b59edfd732a49d8e06ffa14d68f6d3b32
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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
  • 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://bologen.ru/wix?keyword=hot+grandma+quotes PDF link annotation
    • https://cdn.sqhk.co/fimegasaz/ssRjcjg/online_war_strategy_game_world_map.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4465255/normal_602b77e929bbb.pdfIn PDF document text
    • http://kivikevakefum.22web.org/lg_wm3997hwa_review.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4410730/normal_60325990ca3e6.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4421365/normal_60092babc04c1.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/kujapomib/refagofizuwavuxope.pdfIn PDF document text
    • https://s3.amazonaws.com/nutanigonu/gekej.pdfIn PDF document text
    • http://fatapiwav.rf.gd/koguboduk.pdfIn PDF document text
    • http://nisarinu.epizy.com/canon_lbp_2900b_printer_driver_for_android.pdfIn PDF document text
    • http://jonemif.epizy.com/how_to_create_extent_reports_in_selenium.pdfIn PDF document text
    • http://napubuxuwel.epizy.com/wugusodenekovimuboja.pdfIn PDF document text
    • https://s3.amazonaws.com/lazolu/drivers_test_study_guide_california.pdfIn PDF document text
    • https://s3.amazonaws.com/dufekifaral/sixolitivewogomakiwaja.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_off0000d69f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD69F 5200 bytes
SHA-256: 403331e666043af1e40f30e1d7e155785d916acf5b9fd9acb2775bd9ba812cf5
font_01_sfnt_off0000e82c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE82C 10316 bytes
SHA-256: d8872aca5a6827d17ba3e8d62f45e913f266034df15ac23372f748521d9427f4