Malicious PDF — malware analysis report

Static analysis result for SHA-256 989ec51e750e4f1b…

MALICIOUS

PDF

62.7 KB Created: 2021-02-14 16:16:08 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-10
MD5: 355570cc7c21c2f9c1ae8d144033f62e SHA-1: 44edf05c608820755cdd58cf0a6751bdb0ae0e48 SHA-256: 989ec51e750e4f1b560c74a000980a11566f79184314749799fa966d7a386755
186 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
  • 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.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • 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://leonvi.ru/wix?keyword=ralston+valley+baseball+twitter PDF link annotation
    • https://nogikukejigili.weebly.com/uploads/1/3/0/8/130873965/690679.pdfIn PDF document text
    • https://nedidibizexoba.weebly.com/uploads/1/3/0/9/130969065/xaxunitudavip-jepag.pdfIn PDF document text
    • https://guxitokos.weebly.com/uploads/1/3/2/6/132681611/xaliwir.pdfIn PDF document text
    • https://dumetokewip.weebly.com/uploads/1/3/4/3/134394823/369552.pdfIn PDF document text
    • https://nojoxarojip.weebly.com/uploads/1/3/0/8/130813855/4579069.pdfIn PDF document text
    • http://goldenframecollision.com/3d_interactive_human_anatomy_free25ae7.pdfIn PDF document text
    • https://tababara.weebly.com/uploads/1/3/0/7/130739165/09e2b09.pdfIn PDF document text
    • https://cdn.sqhk.co/mitugejaxel/jegdyA6/bubble_shooter_jungle_pop_game_download.pdfIn PDF document text
    • http://basvuruizleme.online/video_worksheet_conflict_and_absolutism_in_europecrn59.pdfIn PDF document text
    • http://agent-ritual495.online/bsl_shaders_1._13._2wz7bd.pdfIn PDF document text
    • https://wubeponasi.weebly.com/uploads/1/3/1/6/131606197/0566fbb00af7.pdfIn PDF document text
    • http://ribupisid.22web.org/autohotkey_software_free.pdfIn PDF document text
    • http://barbanapoli.moscow/5747009841474ff1.pdfIn PDF document text
    • http://bigwin-1xbet.fun/bts_airplane_pt_2_japanese_songx8wc6.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/lokijuronig/69820841191.pdfIn PDF document text
    • http://bobamexexaru.rf.gd/33594169479.pdfIn PDF document text
    • http://vuwotona.epizy.com/24555592195.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_off0000bdcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xBDCF 5080 bytes
SHA-256: cae2e923c414cb9d9f5cf1fcccf76115095e06850619b9542c4aa0f4f4dac57a
font_01_sfnt_off0000cf43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCF43 9004 bytes
SHA-256: 4c5cd57266b9dda141db72392be5e1c446a3b5dc38970040bf440e1f429f9a39