Malicious PDF — malware analysis report

Static analysis result for SHA-256 85274db340e4f3ec…

MALICIOUS

PDF

71.8 KB Created: 2021-02-04 19:50:28 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-05-23
MD5: 280753b881603a07dcec8855fe574a2c SHA-1: 44da5f5d5c62486583512616a55237e1c86d443a SHA-256: 85274db340e4f3ec2648c08d25a3891c92cda643b958f56259839f2f5e2e536d
96 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The file is a PDF document that contains an embedded URI pointing to a suspicious external website. The ML classifier and ClamAV detection strongly indicate malicious intent, likely phishing or malware distribution. While no scripts were explicitly extracted, the PDF structure and embedded URI suggest an attempt to redirect the user to a malicious resource, potentially for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 4

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • 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/wb?keyword=lagu%20gratis%20cinta%20luar%20biasa PDF link annotation
    • https://cdn.sqhk.co/xazururoxe/icxjij0/hide_seek_guide_2014_full_movie.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4393034/normal_5fd83d266d565.pdfIn PDF document text
    • https://cdn.sqhk.co/rifokinimito/IidgjSq/6565586148.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4369304/normal_6016a4ee92acb.pdfIn PDF document text
    • https://cdn.sqhk.co/xejudawadoni/cvhjzec/bingo_party_food_ideas.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4459318/normal_5fcfa31b6dab4.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4366319/normal_5fcf80663ac6f.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4407299/normal_5fd2fe18df520.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4375696/normal_60135b1441603.pdfIn PDF document text
    • https://cdn.sqhk.co/lozosasuxe/akZjdlA/dumawetikunusegimujox.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/taturi/58163058843.pdfIn PDF document text
    • https://s3.amazonaws.com/kovezux/javascript_code_formatting_rules.pdfIn PDF document text
    • https://s3.amazonaws.com/nelizenejakarug/zeroxo.pdfIn PDF document text
    • https://s3.amazonaws.com/vofadoloves/bangla_new_movie_villain_full_movie.pdfIn PDF document text
    • https://s3.amazonaws.com/xifabilejilab/30131955157.pdfIn PDF document text
    • https://s3.amazonaws.com/desekusoxi/tavaxifepiruwimapijeluna.pdfIn PDF document text
    • https://s3.amazonaws.com/xafaxotaful/barfi_movie_kyon_video_song.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_off0000dcc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDCC2 5048 bytes
SHA-256: f057ca24faac43524f86c4bce4492bd744ceef03a942f7634c5458f033150131
font_01_sfnt_off0000ee00.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xEE00 10604 bytes
SHA-256: d5cc4a6625a5bb7c44e54c35bdd576bbbb0cf026f7ca9053c2a0348c9da96ba0

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