Malicious PDF — malware analysis report

Static analysis result for SHA-256 91690a4aafffb688…

MALICIOUS

PDF

71.8 KB Created: 2021-02-16 12:10:32 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: f9c341a18677c421a97df496263d40f5 SHA-1: 45b6b50ad6ab9789d2299b7e3dc6e1794cb75ad0 SHA-256: 91690a4aafffb688b6955453ba217d2aadcc23dac0deee42a9de7645dfb79bed
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9991

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://seumenha.ru/wix?keyword=delhi+queen+dance+studio PDF link annotation
    • https://cdn.sqhk.co/vevajewez/0jj5ggU/pejibubomamiliwi.pdfIn PDF document text
    • https://cdn.sqhk.co/fapolokid/V7zXiin/6402752746.pdfIn PDF document text
    • https://cdn.sqhk.co/litalile/WLigigu/ninja_fishing_mod_apk_2._0._7.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4409806/normal_5fe8dd4880b00.pdfIn PDF document text
    • https://cdn.sqhk.co/fegadosijete/gibifUr/veverovibaleluvuveniju.pdfIn PDF document text
    • https://cdn.sqhk.co/vumuwuxa/mhg5dih/zegagikigazonu.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4365601/normal_6028b91d6a019.pdfIn PDF document text
    • https://cdn.sqhk.co/wuvotalek/vhjjhje/piano_chords_sheet_music_for_beginners.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4475854/normal_5fcaf11b06f94.pdfIn PDF document text
    • https://cdn.sqhk.co/vaminika/gfjabYa/gutschein_bei_amazon_prime_einlosen.pdfIn PDF document text
    • https://cdn.sqhk.co/xexisini/Xz2jWih/real_moto_brasil_download_mod_apk.pdfIn PDF document text
    • http://pudirexuzil.iblogger.org/lopopaligexulodumo.pdfIn PDF document text
    • https://cdn.sqhk.co/lepudijazur/diiqlgg/xizamonikapabisomuba.pdfIn PDF document text
    • https://cdn.sqhk.co/womawuxinuge/hiahdWs/mystic_messenger_chat_room_times_day_2.pdfIn PDF document text
    • https://cdn.sqhk.co/bisegepamitu/OjbPpid/paxajamesizuj.pdfIn PDF document text
    • https://cdn.sqhk.co/tinolefowi/5ejaLji/dino_run_chrome_web_store.pdfIn PDF document text
    • https://cdn.sqhk.co/rufebumu/Nzhegg0/share_chat_tik_tok_videos_telugu_2019.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://fedorahosted.org/lohitIn PDF document text
    • https://s3.amazonaws.com/luborinizu/97206889437.pdfIn PDF document text
    • http://rudufegasavu.rf.gd/really_hard_to_answer_would_you_rathers.pdfIn PDF document text
    • https://s3.amazonaws.com/bisiku/37490522974.pdfIn PDF document text
    • https://s3.amazonaws.com/fejififimaketo/free_translation_online.pdfIn PDF document text
    • https://s3.amazonaws.com/sobaketemu/17021258905.pdfIn PDF document text
    • https://s3.amazonaws.com/setaxilitozuko/29114443258.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000ced4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCED4 5056 bytes
SHA-256: d8eb82cbe8f6fbd34dc054ca53e6a1ba6f0194c6b1073398eee57de89f0ebcd5
font_01_sfnt_off0000dffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDFFE 10328 bytes
SHA-256: c49174f21e3d52a27e2cc0d27b23e5bf680651f0cf5b1dcc1f812870a62e1663
font_02_sfnt_off00010386.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10386 3628 bytes
SHA-256: ee60d8dd42ccc59bc0034e2bb7e3b1b085d0dc54610017c41f492ae1c9aab7ea

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