Malicious PDF — malware analysis report

Static analysis result for SHA-256 d5f758f2392cce42…

MALICIOUS

PDF

71.7 KB Created: 2021-02-22 13:30:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-15
MD5: 9179195fd65f83d205ea0e11f2e0618e SHA-1: 657b6afdada98aa34b0e03966bedb9848e8b7dac SHA-256: d5f758f2392cce429e37cc84659caa6ee04129de5741a387f945e5e08fe94ba8
176 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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
  • 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.
  • Image-heavy PDF with invisible link to suspicious domain high PDF_SUSPICIOUS_LINK_LURE
    PDF is a small image-heavy lure with invisible link annotations that send the user to a suspicious high-risk-domain URI. This matches credential-phishing carriers where the visible document is only a prompt and the real collection flow happens on the linked website.
  • 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://druttle.ru/wb?keyword=the%20adventures%20of%20tom%20sawyer%20book%20review%20pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4403282/normal_60226f7b87cb8.pdfIn PDF document text
    • https://cdn.sqhk.co/jukunobegabe/hSgfwrI/air_hockey_pucks_in_store.pdfIn PDF document text
    • http://allerop.xyz/arte_de_la_guerra_libro_resumenpxh82.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4425759/normal_6001fe7664ee4.pdfIn PDF document text
    • https://cdn.sqhk.co/xerejijasoma/SYjcYxF/best_friend_quotes_in_english_for_instagram.pdfIn PDF document text
    • http://community-day.ru/remote_control_plane_gamep94n3.pdfIn PDF document text
    • https://cdn.sqhk.co/tememagitapo/gjRh9hb/social_media_marketing_strategy_2018.pdfIn PDF document text
    • http://copyrights-notices-helps.com/happy_wheel_games_to_play4yelg.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4367007/normal_602420088d118.pdfIn PDF document text
    • http://com-login8.xyz/ledefakenakuboiw8dd.pdfIn PDF document text
    • https://cdn.sqhk.co/rewazexi/VJz4f7E/kubadakikaberekuzilemuzek.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/sazomo/fojigonexe.pdfIn PDF document text
    • https://s3.amazonaws.com/viboxikuz/cyberflix_for_pc.pdfIn PDF document text
    • https://s3.amazonaws.com/bupaxomu/applied_ballistics_analytics.pdfIn PDF document text
    • https://s3.amazonaws.com/wozoxub/tepufubemesojasigapi.pdfIn PDF document text
    • http://gamumilow.rf.gd/beethoven_sheet_music_roblox.pdfIn PDF document text
    • https://s3.amazonaws.com/vovopafubipu/written_warning_letter_template_for_insubordination.pdfIn PDF document text
    • https://s3.amazonaws.com/megujobemegor/application_form_for_schengen_visa_france.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_off0000dba3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDBA3 5656 bytes
SHA-256: a7572bd6919c1ee147aa30a99728f891296ef48ec757f9c32a9d9ba7fc7abe9e
font_01_sfnt_off0000eecc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEECC 10140 bytes
SHA-256: 2b7aec4839009609f7ec04b4c838f68470d5a398f2936037342cff79e9e75519

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