Malicious PDF — malware analysis report

Static analysis result for SHA-256 89ae424a5bc79739…

MALICIOUS

PDF

36.5 KB Created: 2021-05-22 15:10:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: cedf11071c67afeb74245010328345fc SHA-1: 9a56f43ea1adc256fd377fe80512af5f9ae4794d SHA-256: 89ae424a5bc79739f0d303ec9950db76b6d7aad8ab53762b62bfec9110161882
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains lures related to free game hacks and redeem codes, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest an attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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 https://netcdn.xyz/app/479516143/minecraft-redeem-code-free-game-hack PDF link annotation
    • https://reggieslockandkey.com/images/roblox-troll-outfits-free_GM431946152.pdfIn PDF document text
    • https://reggieslockandkey.com/images/how-to-hack-coin-master-game_GM406889139.pdfIn PDF document text
    • http://reggieslockandkey.com/images/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • http://reggieslockandkey.com/images/minecraft-free-online-games_GM479516143.pdfIn PDF document text
    • https://reggieslockandkey.com/images/coin-master-free-spins-link-fb_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
stream_002_off00003442.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3442 25956 bytes
SHA-256: 3f1239384cbf8f8b9179216a5ee455dc891baff0f128d9f38a7a77426ad0fded
font_01_sfnt_off00006dc2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DC2 18144 bytes
SHA-256: cc19f71067fb84b21b4f81fd44d646587f5653a8a3073e37b17122851b8ee9dd

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