Malicious PDF — malware analysis report

Static analysis result for SHA-256 5f30fc3d33b4ed0e…

MALICIOUS

PDF

100.9 KB Created: 2021-02-22 11:41:34 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 9c76db46a96be81794f7f21bc4901017 SHA-1: ca9979926092e7951ca9e5f495eaebf99a05e781 SHA-256: 5f30fc3d33b4ed0e0c23cf03bcfe0f6ab7ad69380950573931a5efa182faead4
104 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The file is a PDF document flagged by ML classifiers and ClamAV as malicious, specifically as a phishing trojan. It contains an embedded URL that likely leads to the download of a secondary payload. The presence of a 'download button' heuristic further supports the phishing lure attack pattern.

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
  • Visual download / call-to-action button lure low SE_DOWNLOAD_BUTTON
    Document contains a call-to-action phrase ('Click here to download', 'Download Now', etc.) — low-signal unless other findings point to a malicious workflow
  • 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://baarspo.ru/strik?utm_term=pocket+icu+3rd+edition+pdf PDF link annotation
    • https://cdn-cms.f-static.net/uploads/4477635/normal_600a6ffb2d904.pdfIn PDF document text
    • https://cdn.sqhk.co/jovowosifo/hbvOuX4/maserati_quattroporte_used.pdfIn PDF document text
    • https://cdn.sqhk.co/gefimiwotux/1sfFV3o/62951027497.pdfIn PDF document text
    • https://cdn.sqhk.co/jabuvilir/cNGxhet/nubudizoz.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4455399/normal_60007b7920a06.pdfIn PDF document text
    • https://cdn.sqhk.co/wogokodu/hijhoK6/2006_fun_runner_toy_hauler_specs.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4376127/normal_601d212824f72.pdfIn PDF document text
    • https://cdn.sqhk.co/fumazuri/yhHLif5/21484403154.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4529024/normal_6006d3704a293.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4495997/normal_600bb154994e7.pdfIn PDF document text
    • https://cdn.sqhk.co/jebavimot/idkSbsu/microsoft_onenote_planner_templates.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/miwolezedubujoz/laboratory_design_guidelines.pdfIn PDF document text
    • https://s3.amazonaws.com/kavalukato/av_converter_apk_pro.pdfIn PDF document text
    • https://s3.amazonaws.com/belapawerezuju/wedding_march_sheet_music_organ.pdfIn PDF document text
    • https://s3.amazonaws.com/remeranexe/happy_bhai_dooj_video_status.pdfIn PDF document text
    • https://s3.amazonaws.com/tugumeb/70247933963.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00011a37.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x11A37 16676 bytes
SHA-256: 65da19cebf248ac9cb6930d2f24ceb545601ef6362616218833fa519f6e1ba44
font_01_sfnt_off00014eb9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x14EB9 4956 bytes
SHA-256: e6950138f310d6a6735cc2e85b34ecc92dcd870a127c7f7b471e605c8a72adc4
font_02_sfnt_off00015fb3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x15FB3 11252 bytes
SHA-256: f76d1eb530e0fac06d0a5121ad1b7a5dccce62dd3cc84936f9667ec68793c431

Open this report in the interactive analyzer, or submit your own file for analysis.