Malicious PDF — malware analysis report

Static analysis result for SHA-256 ac713e61d8d87c3b…

MALICIOUS

PDF

47.0 KB Created: 2021-06-06 23:34:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 3cfdc1d34f4cee25e7650da603d7cca4 SHA-1: 17842155f7ba74254d2d42db41b615f01c1ef2bb SHA-256: ac713e61d8d87c3b8e00fd54e65272c6cc256390537f9efee7f6064a0c056bb8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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 https://netcdn.tw/app/431946152/free-robux-generator-2021-hack-game-hack PDF link annotation
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/minecraft-hack-ios_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/minecraft-noob-vs-pro-vs-hacker-vs-god_GM479516143.pdfIn PDF document text
    • https://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/minecraft-free-education_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/coin-master-links-free-spins_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/roblox-hacks-scythe-script_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/how-to-host-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://elearning.mtsn2tala.sch.id/__statics/gudangsoal/files/minecraft-toys-for-free_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

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
stream_004_off00005129.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5129 29012 bytes
SHA-256: 6ad86ca0a72f3d0f69be572044e59707f45d37062fe22f4618194f15c27c8b0c
font_01_sfnt_off00009322.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9322 18916 bytes
SHA-256: 399b1b398d2d53a96ba1ba321343ceacab7525d94d0174cedac468506f48a17b

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