Malicious PDF — malware analysis report

Static analysis result for SHA-256 92fcbedfcd496764…

MALICIOUS

PDF

34.7 KB Created: 2021-06-28 01:17:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c95807273c96459377d75e55a15eaade SHA-1: 780f6b0f70e7e9dff35deeb5f3b02d78ad54b6d8 SHA-256: 92fcbedfcd49676445ceab168bc06bd41ffc1c348e78f6534bd9b4e105f4d8a7
82 Risk Score

Malware Insights

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

The PDF document contains multiple embedded URLs that redirect to sites offering game hacks and cheats, such as for Roblox and Coin Master. The ML classifier and heuristics strongly indicate malicious intent, likely to trick users into downloading malware or visiting a phishing site. The document body and heuristics suggest a lure for free game items, leading to the malicious URL http://netcdn.co/app/431946152/roblox-free-game-free-to-play-game-hack.

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/roblox-free-game-free-to-play-game-hack PDF link annotation
    • http://digilib.iailm.ac.id/repository/how-to-make-clothes-on-roblox-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/como-ser-hacker-en-roblox-xonnek_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-robux-pastedin_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/cheats-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/get-coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/free-tix-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/coin-master-free-spins-save_GM406889139.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-someone-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-get-free-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/minecraft-hacks-18-9_GM479516143.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id//repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/help-c-o-m-to-earn-free-25k-robux_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-hack-into-someone-roblox-account-2021_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/release-boku-no-roblox-remastered-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/roblox-dugeon-quest-script-hack_GM431946152.pdfIn PDF document text
    • http://digilib.iailm.ac.id/repository/how-to-duplicate-coin-master-spin-hack_GM406889139.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_off00002f82.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F82 22584 bytes
SHA-256: a1e3f28be228feddb97dd0073ac043508d43e161214f8499a2cc467ab953d411
font_01_sfnt_off00006229.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6229 19244 bytes
SHA-256: cf47a49d4d8e315d4a67161c9fcb534c16e0148dfcc181fdefc5191d77131fb7

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