Malicious PDF — malware analysis report

Static analysis result for SHA-256 386fbc1409482db8…

MALICIOUS

PDF

32.3 KB Created: 2021-07-05 15:22:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b6c273be18b7b46c96da71308e1c6fba SHA-1: a5493d0100927a42eb95677fa248dc33ea395cda SHA-256: 386fbc1409482db8d9b178394a91328f526c56c9f133bd260b8a7e004440b18e
82 Risk Score

Malware Insights

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

The PDF document employs a lure of game hacks and free generators to entice users into clicking malicious links. The high-confidence ML classifier and specific heuristic firings indicate malicious intent. The embedded URLs, such as http://netcdn.tw/app/479516143/hack-minecraft-game-hack, likely lead to further malicious content or exploit delivery.

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/hack-minecraft-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/robux-free-gift-card-org-hack_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/hack-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-hack-roblox-mad-games_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/snippet-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-e-free_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/hacker-de-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/my-roblox-account-is-being-hacked-what-do-i-do_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-cards-for-free_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-free-apk-java-edition_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-free-hair-girl_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-roblox-outfits-for-boys_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-addons_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-detectec-cheat_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/flip-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-font-free_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-roebucks-in-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_off00002e61.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E61 21076 bytes
SHA-256: 78eea5a8abe311a3905644b49c2327ad2b1e74e84b51ac1d9b980a3776fe446a
font_01_sfnt_off00005c2d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C2D 18024 bytes
SHA-256: dfd9b79a19cc1f195c001309102fb5aa6a063071b6395cd5a2b473f5f084aedf

Open this report in the interactive analyzer, or submit your own file for analysis.