Malicious PDF — malware analysis report

Static analysis result for SHA-256 c56e8bb202919014…

MALICIOUS

PDF

68.4 KB Created: 2021-02-26 16:14:46 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 4dff4f859845eef6d658f95502afc745 SHA-1: 436c0ad28706b24c209ea788fdcdc17098e2c0cd SHA-256: c56e8bb2029190143781c3ec7e78cbf2959876eae92071c31f7022b4113b5805
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://midufefew.ru/award?keyword=truck+service+advisor+salary PDF link annotation
    • https://cdn.sqhk.co/wazafanez/thD9Dge/assistant_project_manager_salary_entry_level.pdfIn PDF document text
    • https://cdn.sqhk.co/taxuvoguraji/8gj5jc6/49459553065.pdfIn PDF document text
    • https://cdn.sqhk.co/perigupa/VxPBBxS/silicon_valley_cast_season_6.pdfIn PDF document text
    • https://cdn.sqhk.co/zumedizojas/jagKAgf/52769481367.pdfIn PDF document text
    • https://cdn.sqhk.co/takabalal/jbkjbhf/premiere_theatres_cloquet_movie_times.pdfIn PDF document text
    • https://cdn.sqhk.co/tasiteregixo/fXeKge5/bopakit.pdfIn PDF document text
    • https://cdn.sqhk.co/jadepibake/fiasqgd/sad_ringtone_2019_mp3_download.pdfIn PDF document text
    • https://cdn.sqhk.co/wisewuguv/iijdvgd/toy_race_3d_descargar.pdfIn PDF document text
    • https://cdn.sqhk.co/xuwadezab/buiPfNd/best_wordpress_templates_for_fashion_bloggers.pdfIn PDF document text
    • https://jovuximunises.weebly.com/uploads/1/3/0/8/130814448/8490766.pdfIn PDF document text
    • https://cdn.sqhk.co/xamitarerivu/ahgjhhe/sowogizif.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4497359/normal_5fcabef907bb1.pdfIn PDF document text
    • https://cdn.sqhk.co/waxolulum/gfhcUgg/kawevumivar.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/nosepevozux/kenwood_tm-d700_programming_software.pdfIn PDF document text
    • https://s3.amazonaws.com/daxemo/92127349928.pdfIn PDF document text
    • https://s3.amazonaws.com/gapivegek/chinese_keyboard_windows_10_free.pdfIn PDF document text
    • https://s3.amazonaws.com/somamere/samsung_tv_un32eh4003f_manual.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_off0000ced1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED1 5108 bytes
SHA-256: 46cb1b91137cf37f351bc350553d6cab5784a390b57f46819ff16c4d73bd83d2
font_01_sfnt_off0000e052.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xE052 10540 bytes
SHA-256: ebfd78431870cf43686a43eaca749671e7840e6d243b1722e50ab005a16d9b30

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