Malicious PDF — malware analysis report

Static analysis result for SHA-256 dcb04ebc568f5d37…

MALICIOUS

PDF

34.5 KB Created: 2021-07-03 22:54:18 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 47cacd29b76dc25138a9dd13d4a3993b SHA-1: 7dc35dfc59496a9edde3e3c425d557b3d3277056 SHA-256: dcb04ebc568f5d37862c2a6bccd939b527cb4e75c72b21c0047eba1a10cf34b7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains embedded URLs and a high-confidence heuristic firing indicating a lure for game hacks. The primary URL, http://netcdn.tw/app/431946152/free-games-like-roblox-game-hack, is likely the initial landing page for a phishing or malware distribution campaign. The document body, though partially corrupted, contains references to game hacks and URLs, reinforcing the malicious intent.

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/free-games-like-roblox-game-hack PDF link annotation
    • https://www.ma-plast.hr/files/coin-master-daily-free-spins-link-app_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/can-you-get-free-pokeballs-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-make-script-hack-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/haktutsin-2021-09-coinmaster50freespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • http://www.ma-plast.hr/files/roblox-robux-hack-deutsch_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-get-the-hacked-face-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.ma-plast.hr/files/how-to-get-free-robux-on-roblox-on-ipad-2021_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/tiktok-free-view-40_GM835599320.pdfIn PDF document text
    • https://www.ma-plast.hr/files/get-free-spins-coin-master-link_GM406889139.pdfIn PDF document text
    • https://www.ma-plast.hr/files/minecraft-hacks-ps4_GM479516143.pdfIn PDF document text
    • https://www.ma-plast.hr/files/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://www.ma-plast.hr/files/how-to-create-a-minecraft-server-for-free_GM479516143.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_off00002ed6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2ED6 22684 bytes
SHA-256: 749f9299d1d60d1423bb6423b4b4b98566f468f79d833752ce209a6b8429ffd9
font_01_sfnt_off00006150.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6150 19200 bytes
SHA-256: 5a76770402f9f54129e6e851f2a2ed8d0409cdca6ea1a763283255a31589df9a

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