Malicious PDF — malware analysis report

Static analysis result for SHA-256 98482b0403965054…

MALICIOUS

PDF

35.6 KB Created: 2021-07-04 14:29:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: c1ff232cdc2af59b2a626fcb38d8b919 SHA-1: bedfc9b264ea0de51618495b68ed2a511f67ceb7 SHA-256: 98482b040396505485d0631e20bdc3d0cbbc7b3ccf6182279b12edca31b7f128
82 Risk Score

Malware Insights

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

The PDF document contains multiple links and a lure related to game hacks, specifically for Roblox and Coin Master. The primary URL, http://netcdn.tw/app/431946152/roblox-royale-high-diamond-hack-game-hack, is flagged as a game hack redirector, indicating a social engineering attempt to trick users into visiting a potentially malicious site. The document body and heuristics confirm this lure, suggesting the intent is to drive traffic to a site that may host malware or phishing content.

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/431946152/roblox-royale-high-diamond-hack-game-hack PDF link annotation
    • http://foo.com.tw/files/how-to-hack-in-roblox-jailbreak-on-ipad_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-robux-and-tix-tricks-amp_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://foo.com.tw/files/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-coins-and-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-item-hack-roblox_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/free-vip-server-roblox-build-a-boat-2021_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/free-attacks-on-coin-master_GM406889139.pdfIn PDF document text
    • http://foo.com.tw/files/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/free-minecraft-capes-no-mods_GM479516143.pdfIn PDF document text
    • http://foo.com.tw/files/free-roblox-gift-cards-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://foo.com.tw/files/freespins-coin-master_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_off000031a7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31A7 22764 bytes
SHA-256: e0d29d8a93e03017d636953c0bcc5e10a560aca1f2b3677e197aea38d55ff949
font_01_sfnt_off00006470.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6470 19724 bytes
SHA-256: 1a67ae04acdcf9bb6160b94dd58735b3f7a5fd1d5d3840fc5372402fae40359c

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