Malicious PDF — malware analysis report

Static analysis result for SHA-256 4a94f41f573e8b77…

MALICIOUS

PDF

34.9 KB Created: 2021-06-29 03:50:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 80e143eab07180dec3e6873babc71bd1 SHA-1: 0af4084928cb634d2898d36f67f71196e2fb829a SHA-256: 4a94f41f573e8b77f142236f85f61d6d07f5105c4cc3baecc2f48cbb36d541f7
82 Risk Score

Malware Insights

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

This PDF document employs a lure of free game generators and hacks to entice users to click on a malicious URL. The ML classifier strongly indicated maliciousness, and the PDF contains a high-severity heuristic firing for linking to such a redirector. The document body and embedded URLs reinforce this lure, suggesting the primary goal is to redirect users to potentially harmful content or further exploit stages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high PDF_GAME_HACK_REDIRECT_LURE
    PDF's clickable action targets a redirector of the form /app/<id>/<slug>-game-hack — the landing-page shape of a large SEO 'free spins / generator / game hack' lure family that funnels victims through rotating disposable hosts to a malware/scam payload. The multi-link variants also trip ML/link-farm rules; this catches the single-link variants that otherwise score clean.
  • 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
  • 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 http://netcdn.co/app/431946152/free-group-generator-roblox-game-hack PDF link annotation
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/robloxfun-com-generator_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-village-3_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-generator-that-works_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-coin-master-spin-app_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-hacksco_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/hack-prison-life-roblox-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/free-robux-easy_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-download-synapse-x-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/link-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/tiktok-free-wala-video_GM835599320.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/roblox-hack-client-pc-download_GM431946152.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/how-to-get-free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1jember.sch.id/__statics/gudangsoal/files/minecraft-xbox-360-free-download-code_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002ef1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EF1 23032 bytes
SHA-256: 594f1acef0641b2f79920d756df798ebe2372dd9c35180d2beaed3bce0523db6
font_01_sfnt_off00006314.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6314 19068 bytes
SHA-256: c53f29e79e4a04d7b716b948583df450e052431439d7be33a4fec1087d7716ce

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