Malicious PDF — malware analysis report

Static analysis result for SHA-256 754b1fa0ff88ba95…

MALICIOUS

PDF

35.1 KB Created: 2021-07-05 20:40:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: ad32769d27247cd76da9d2d455fee200 SHA-1: 16088a7787df64a5c78790ef77466eb5e2c93c2e SHA-256: 754b1fa0ff88ba951db74002318ac479b5cc83cebe54e15cce03b4c73950d967
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 0.9980

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/free-spins-coin-master-without-survey-game-hack PDF link annotation
    • http://sttlets.education/senayan/repository/free-robux-generator-no-surveys-scam_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/rbx-gg-free-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/how-do-i-log-into-my-hacked-account-on-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-roblox-games-for-kids_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/hacker-defense-system-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/free-robux-gg-codes-2021-october_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/add-to-roblox-free-gear_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/instal-cheat-roblox-adopt-me_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/instagram-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/coin-master-hack-ios-no-human-verification_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/make-robux_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/pokemon-go-free-stuff_GM1094591345.pdfIn PDF document text
    • http://sttlets.education/senayan//repository/coin-master-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/gamepass-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/obby-games-on-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://sttlets.education/senayan/repository/hack-to-get-money-in-gta-roblox_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_off00003112.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3112 22948 bytes
SHA-256: 81979f858acb08a5aeac478e428c5911edf094eb0750e16088d50f7de9862040
font_01_sfnt_off0000649f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649F 18972 bytes
SHA-256: e05a6f41159f4979858c0ff2adddce7f3fedef504292efbc8f8931e1012c2747

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