Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab781972675c8f24…

MALICIOUS

PDF

67.2 KB Created: 2021-02-14 00:48:48 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: bc012723ac5ecdd5a4e8ef34cb601d34 SHA-1: 85774ea7d73001a1ce7ea9b09152d927fcf12649 SHA-256: ab781972675c8f24dcf6821be659d876550943a519c9fa073e9019f5dbf65906
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://baarspo.ru/123?utm_term=song+about+witches+in+macbeth PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4416495/normal_5fdd8587eb34f.pdfIn PDF document text
    • http://item-mask.top/86479584037ql4uz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4460682/normal_5fdf929203390.pdfIn PDF document text
    • https://cdn.sqhk.co/fotenulutis/YjbwaDH/77253233526.pdfIn PDF document text
    • https://cdn.sqhk.co/sonawumi/OWhjFib/54469867167.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4457305/normal_601af43239874.pdfIn PDF document text
    • http://homearfes.com/google_authenticator_manual_key_formatu4ruc.pdfIn PDF document text
    • https://cdn.sqhk.co/rujiwujik/jgwifsT/nuvovapizorasikegix.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4420235/normal_5fc7787f974c1.pdfIn PDF document text
    • http://amsidisi.xyz/grand_prix_story_1_apk_downloadbqhzm.pdfIn PDF document text
    • https://cdn.sqhk.co/dowotovewi/hgig13t/fill_in_3d_games_download_free.pdfIn PDF document text
    • http://dmgameplan.com/burda_magazine2uk9f.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4368469/normal_60065c0246051.pdfIn PDF document text
    • https://cdn.sqhk.co/vizakifito/hbggj3Z/fast_racing_car_3d_simulator_mod_apk.pdfIn PDF document text
    • https://cdn.sqhk.co/lafuwexale/vieExid/dunkin_donuts_near_me_menu.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_off0000cafe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCAFE 5420 bytes
SHA-256: 557d90cc331a763d2a84ea309f8524cace9d4265f2cd7f20522a3777c999f513
font_01_sfnt_off0000dd61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDD61 10236 bytes
SHA-256: 759a06021e262b43118bb586e006c72670af7aa436a3b06f054ac93e733fa557