Malicious PDF — malware analysis report

Static analysis result for SHA-256 0515cc8e31b9d90d…

MALICIOUS

PDF

65.3 KB Created: 2021-02-21 22:56:01 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-25
MD5: 718c2b40410ea69cfedcb97f08608816 SHA-1: 861850321cf918c4a2b9f29acb67fc76d8637988 SHA-256: 0515cc8e31b9d90d6a06cb6f2a70a3868fd4d880ebf2a40e639f9257c6cf14ef
136 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

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/123?utm_term=your+love+never+fails+chords+never+gives+up PDF link annotation
    • https://static.s123-cdn-static.com/uploads/4408172/normal_5fcb63e6e9570.pdfIn PDF document text
    • https://cdn.sqhk.co/xoradofexul/chjDHXx/drunkn_bar_fight_psvr_alley.pdfIn PDF document text
    • https://cdn.sqhk.co/butituguxur/3oOidji/27134540456.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4413108/normal_6007478a3f25a.pdfIn PDF document text
    • https://cdn.sqhk.co/jasojime/5PivdxL/apk_one_epic_knight_download.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4454430/normal_5fd63fc1ef7f0.pdfIn PDF document text
    • https://cdn.sqhk.co/zexoribuj/hiibQ7K/fashion_fantasy_mod_apk_unlimited_money.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4466680/normal_6021bf6876e91.pdfIn PDF document text
    • https://jasemoluzisad.weebly.com/uploads/1/3/5/9/135968146/6794760.pdfIn PDF document text
    • https://cdn.sqhk.co/putizimetiwe/7jhhvhf/bicycle_track_racing_games_online.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/womirofop/greetings_and_farewells_in_spanish_worksheets.pdfIn PDF document text
    • http://roxegut.rf.gd/histology_quiz_epithelial_answers.pdfIn PDF document text
    • https://s3.amazonaws.com/fokapikow/power_electronics_notes_free.pdfIn PDF document text
    • https://s3.amazonaws.com/nalifij/alarm_app_mac.pdfIn PDF document text
    • https://s3.amazonaws.com/dabatisew/48883997988.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_off0000c275.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xC275 5436 bytes
SHA-256: 2b371ccfc3505e8949a263fc43c3bd3fa62d0c6fe4925bbe961e48d46f3e6613
font_01_sfnt_off0000d4fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xD4FA 10236 bytes
SHA-256: 1e5023044322b3b84da68a095420afb9af9dab46dfcd9012d7699819702e4ce4