Malicious PDF — malware analysis report

Static analysis result for SHA-256 f12cf26f101e8207…

MALICIOUS

PDF

34.3 KB Created: 2021-07-03 21:56:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 73bf01bb7429f4d3505a1fae61a97814 SHA-1: 2c5906395f6041b6c49d7359375de78887de35b4 SHA-256: f12cf26f101e8207387e92cb150fa054fdc994ce847e5b83fe329f84c3041e36
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains a high-risk heuristic firing for a game hack redirect lure, pointing to a suspicious URL. The document body and embedded URLs reinforce this by referencing game hacks and generators, aiming to trick users into clicking the malicious link. The ML classifier also strongly indicated maliciousness.

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/479516143/minecraft-pe-apk-download-game-hack PDF link annotation
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/free-minecraft-account-list_GM479516143.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/coin-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/robux-generator-no-verification-needed_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/roblox-countdown-games-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/hack-coin-master-apk-mod_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/roblox-speed-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/free-tiktok-followers-and-likes_GM835599320.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/robux-miner_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-get-free-robux-in-roblox-pastebin-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/roblox-free-unlimited-robux-generator_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/cheat-roblox-aimbot-arsenal_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/all-free-rthro-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-get-minecraft-coins-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/free-spins-and-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://elearning.manicbatam.com/__statics/gudangsoal/files/how-to-make-robux-on-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_off0000300f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300F 22228 bytes
SHA-256: 0f8d42892c0ea9321a4342e4a4acd1295a4cb37db6ab61201d2f82d5db57cdd1
font_01_sfnt_off00006137.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6137 19080 bytes
SHA-256: 04611a07a90261522406fd80a5d51e831354f959986219f1644fb893ba35d35b

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