Malicious PDF — malware analysis report

Static analysis result for SHA-256 892576094d373bb3…

MALICIOUS

PDF

68.8 KB Created: 2021-02-19 23:34:42 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: 456cf08765d23ad09690ff1e1e66515a SHA-1: e41c5d5bee22b8ef3526e5e42496cfc22d91b2b5 SHA-256: 892576094d373bb355f505a3200dc4ae305321cc6c6bcd28fef96c61079c5adc
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/123?utm_term=char-broil+patio+bistro+240+red+gas+bbq PDF link annotation
    • https://poxejoretojav.weebly.com/uploads/1/3/4/7/134740271/pawegejure-betobila.pdfIn PDF document text
    • https://xixivisowokote.weebly.com/uploads/1/3/2/8/132814838/2046453.pdfIn PDF document text
    • https://gerudupox.weebly.com/uploads/1/3/2/7/132712596/b41c472267.pdfIn PDF document text
    • https://vafabifagid.weebly.com/uploads/1/3/4/5/134583570/b6c5da2ebf6e6.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/tesasubawalozan/2516215479.pdfIn PDF document text
    • https://s3.amazonaws.com/fatisake/61335105330.pdfIn PDF document text
    • https://s3.amazonaws.com/nojemi/40161394361.pdfIn PDF document text
    • https://s3.amazonaws.com/zowejunef/ohio_real_estate_appraiser_license_renewal_form.pdfIn PDF document text
    • https://s3.amazonaws.com/juzowilipi/doraemon_story_of_seasons_gratis.pdfIn PDF document text
    • https://s3.amazonaws.com/zibenoroduzuw/vodafone_india_sustainability_report.pdfIn PDF document text
    • https://s3.amazonaws.com/kavugusepe/57739950017.pdfIn PDF document text
    • https://s3.amazonaws.com/napejaxosinages/bandini_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/vogubivajavofu/data_structures_cheat_sheet.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/zafotekosukuwigufa.pdfIn PDF document text
    • https://s3.amazonaws.com/gorajikunobixi/aila_aila_hua_hua_video_song.pdfIn PDF document text
    • https://s3.amazonaws.com/suxiweke/wusivupikolilidaverasiz.pdfIn PDF document text
    • https://s3.amazonaws.com/veraxawewib/minovilo.pdfIn PDF document text
    • https://s3.amazonaws.com/resisuna/luvulubu.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_off0000cde8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCDE8 5784 bytes
SHA-256: f8a708ea5c039fc5c9c0553e83c3f339b96c823f67c0e762f81093ecd5308aa4
font_01_sfnt_off0000e188.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE188 10792 bytes
SHA-256: 938bdaa215f0c16a08851b7255e33cf45de333e621e1f6ca4361ec6fe598d386

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