Malicious PDF — malware analysis report

Static analysis result for SHA-256 adfeec0e6eb21593…

MALICIOUS

PDF

34.6 KB Created: 2021-07-04 02:27:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 48bdf3f48f5bb1a3586423cb8de13c59 SHA-1: b6b0a18926f3a082f5317e6e99f427277a607624 SHA-256: adfeec0e6eb215930ed618b9cddf4c2e58a76b0cace443ca264dc196db236ff5
82 Risk Score

Malware Insights

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

The PDF document contains a lure for game hacks and generators, specifically mentioning Minecraft and Robux. It includes an external URI pointing to 'netcdn.tw' which is flagged as a game hack redirector. The ML classifier also strongly indicated maliciousness. While no scripts were directly extracted, the embedded links and the nature of the lure suggest the document is designed to trick users into downloading a second-stage payload or visiting a malicious site.

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-free-download-game-hack PDF link annotation
    • http://katalog.ireyogya.org/repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/how-to-get-free-robux-no-waiting-no-inspect_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-clothing-on-roblox_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/welcome-to-roblox-account-hacker_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/minecraft-survival-free_GM479516143.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/generate-free-robux-gift-card_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-item-generator-hack-that-game_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/cheat-codes-for-roblox-legends-of-speed_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/noob-vs-pro-vs-hacker-roblox-mad-city_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/roblox-bandit-simulator-hack_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/admin-commands-roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-spins-for-coin-master-on-1-19-19_GM406889139.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/play-roblox-free-online_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-robux-working_GM431946152.pdfIn PDF document text
    • http://katalog.ireyogya.org/repository/free-faces-on-roblox-2021_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_off000030c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30C4 22816 bytes
SHA-256: 31393e9dd6df62a8c59f60357878ecfc6e9c359642570c63602ddf623ae0fdff
font_01_sfnt_off00006344.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6344 18732 bytes
SHA-256: 8921cb5acf2bfd242cfbfc80870e208b5ffdfca149ab0ae80b4a91cea12f23ee

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