Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc5790692f39829d…

MALICIOUS

PDF

34.4 KB Created: 2021-07-03 18:13:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 459aa791836c142f86ad62100274b253 SHA-1: fe55e68730132ad9b5b71275ebe07d26ca8c449d SHA-256: fc5790692f39829dec8c13802a487b7c240f2c6b991d495fc7662fce2324d7fa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for game hacks and free in-game currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded URL is likely intended to download a second-stage payload or redirect to a phishing site.

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.tw/app/406889139/blogspot-free-spins-coin-master-game-hack PDF link annotation
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/sites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-groups-that-give-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-back-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-site_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/hack-robux-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/pokemon-go-free-event-box_GM1094591345.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/minecraft-windows-10-edition-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/is-ahmad20218-being-hacked-in-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/roblox-robux-artmoney-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/coin-master-hack-apk-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/2021-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/pokemon-go-free-games_GM1094591345.pdfIn PDF document text
    • https://elearning.mtsn3kebumen.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00003176.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3176 22428 bytes
SHA-256: 278b0ae8bef47db34c9f379eeea163e3cac43074a7c81f2357cbb02af9cfafeb
font_01_sfnt_off00006374.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6374 18464 bytes
SHA-256: 230ca97f16dd2ddf1879142f15263642e6919db147f0bcf840325c8143f28d8e

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