Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd59aff9a7b17a5c…

MALICIOUS

PDF

81.1 KB Created: 2021-02-19 11:34:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 8979fc46e9bc6b28714a8c72923a2d74 SHA-1: 94c249916e097043517ec0be117e36c1a46c014c SHA-256: dd59aff9a7b17a5c3e68748b2a2a4a669a9ca2e9820b042a537ef36c6790401e
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9997

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://bologen.ru/123?utm_term=how+to+use+brother+sewing+machine+for+beginners PDF link annotation
    • https://cdn.sqhk.co/tixunudixa/iggl0gg/24158776103.pdfIn PDF document text
    • http://helplnstagramcontact5087423.com/sda_hymnal_free_download6zlzv.pdfIn PDF document text
    • http://easylearning.space/anti_aliasing_filterfajts.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4495686/normal_5fdee4995cb18.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461509/normal_60076f6a9a285.pdfIn PDF document text
    • https://cdn.sqhk.co/joduragenep/joijL97/sun_tzu_art_of_war_ebook_free.pdfIn PDF document text
    • https://cdn.sqhk.co/febowozefu/fVVijii/skateboarding_tricks_made_easy.pdfIn PDF document text
    • https://cdn.sqhk.co/fijumirana/gi1VgcT/pixel_art_studio_tutorial.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/lixisariwulo/best_way_to_listen_to_music.pdfIn PDF document text
    • https://s3.amazonaws.com/zodererezuzuxi/fall_out_boy_centuries_lyrics.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/68453093585.pdfIn PDF document text
    • https://s3.amazonaws.com/jesidofefe/31102616880.pdfIn PDF document text
    • https://s3.amazonaws.com/topipovikapari/post_cardiac_arrest_syndrome_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/sinadi/12112577424.pdfIn PDF document text
    • http://posufimiru.rf.gd/56447168650.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_off0000f4cc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF4CC 5456 bytes
SHA-256: 367ef5f9b55bae723598313f3fa557c88a65f9223c79bd056fe9d3aed963c11a
font_01_sfnt_off00010742.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x10742 14856 bytes
SHA-256: cb375eb40332bc24f3b79b1b92ddfbfdf945891e17e4468748f069e85233c9c0