Malicious PDF — malware analysis report

Static analysis result for SHA-256 0c97a114c149a74d…

MALICIOUS

PDF

72.5 KB Created: 2021-03-03 09:59:20 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-04
MD5: ed3403199c1abdcd66f32903e8ef21f6 SHA-1: 16fc6e11fd1800c92ab21fc8c08937332bb3688a SHA-256: 0c97a114c149a74d29168f5a04d89c011f7003b96f7811e47b1798d93dc38fea
196 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • 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://botokaw.ru/award?keyword=is+buying+a+used+mustang+a+good+idea PDF link annotation
    • https://toruruxixe.weebly.com/uploads/1/3/4/6/134698343/dinonarer.pdfIn PDF document text
    • https://cdn.sqhk.co/sadudolamom/ne37haR/vodupadis.pdfIn PDF document text
    • https://durajonuz.weebly.com/uploads/1/3/1/3/131383269/jadalatik_tagegusol.pdfIn PDF document text
    • https://cdn.sqhk.co/lupekute/ifigjiU/escape_2020_no_limit_intense_racing.pdfIn PDF document text
    • https://cdn.sqhk.co/tezesafura/koii9Yy/dark_souls_3_dark_knight_sword_build.pdfIn PDF document text
    • https://cdn.sqhk.co/nizufalagef/GRiaIia/30058164722.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/wutogugej/scottish_water_reporting_faults.pdfIn PDF document text
    • https://s3.amazonaws.com/pewebopufupe/free_resume_templates_microsoft_word_2010.pdfIn PDF document text
    • https://s3.amazonaws.com/bupesejirijejus/hollywood_movies_free_in_english_hd.pdfIn PDF document text
    • https://s3.amazonaws.com/kitakilesa/buried_alive_logic.pdfIn PDF document text
    • http://matemot.epizy.com/baidu_browser_lite_apk.pdfIn PDF document text
    • http://rijewetevoxo.rf.gd/werejut.pdfIn PDF document text
    • https://s3.amazonaws.com/vesubodufisi/cookie_sheet_definition_and_example.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/pajetajatowewu.pdfIn PDF document text
    • https://s3.amazonaws.com/sixenogafopoj/allah_hu_akbar_image.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_off0000de19.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDE19 5196 bytes
SHA-256: a6d6de3929b9604bb5b7550555eff97625fb843913596be2984042c2340a7e44
font_01_sfnt_off0000efbc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEFBC 10916 bytes
SHA-256: 7594459e9d787534b06d996917484d67342c4d04d2c7bc394476cc54e50faa34