Malicious PDF — malware analysis report

Static analysis result for SHA-256 0f51fbc67d43e47f…

MALICIOUS

PDF

69.8 KB Created: 2021-02-08 07:52:04 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 47caa954f2a548de70a18bf3ff98411e SHA-1: d01aa0e73e496e40e535a902df786d9d7e1990a5 SHA-256: 0f51fbc67d43e47f6975901a849339c5df743c88a3b5dd693632020f77ae5a15
204 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 7

  • 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.
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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=davv%20cet%20last%20year%20papers%20pdf PDF link annotation
    • http://copyrighytsupport.com/ccna_security_210_260_official_cert_guidez1jd2.pdfIn PDF document text
    • https://nibolujadi.weebly.com/uploads/1/3/1/3/131381302/8aa8911dc11b.pdfIn PDF document text
    • https://cdn.sqhk.co/bewewojiwo/igh6ier/dixazozavumifadagikinuje.pdfIn PDF document text
    • https://cdn.sqhk.co/wujakegu/abqCvzb/end_of_days_lyrics_gareth.pdfIn PDF document text
    • https://cdn.sqhk.co/kewawukufiju/3ijjac5/99085855576.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4452845/normal_600f4e52daa58.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4370317/normal_5fe2f820cc103.pdfIn PDF document text
    • https://cdn.sqhk.co/tutabudoxuwa/geRjjii/free_video_downloader_for_tiktok.pdfIn PDF document text
    • http://tixshopclub.space/i_command_my_hands_lyricsxgyso.pdfIn PDF document text
    • https://cdn.sqhk.co/vakusukereju/O6GhcEI/songs_by_paul_kelly_and_the_messengers.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4443809/normal_5febf3fe249ad.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4412170/normal_6015b9e45c8b5.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/kafises/fedatesax.pdfIn PDF document text
    • https://s3.amazonaws.com/gixirojozogufux/armourer_s_workshop_1._12._2.pdfIn PDF document text
    • https://s3.amazonaws.com/boxalewijim/aloe_blacc_wake_me_up.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_off0000d438.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD438 5312 bytes
SHA-256: 40a2ff82f68caed600f848dcf20b7fdaa02d7cced53ce5ec7257bc93799a820e
font_01_sfnt_off0000e66e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE66E 10616 bytes
SHA-256: 504afaa21f80195ab4efd1c414d952f31bef953afa4c050af7916fe455e40d38

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