Malicious PDF — malware analysis report

Static analysis result for SHA-256 903d74c9878a1594…

MALICIOUS

PDF

46.2 KB Created: 2021-05-11 08:01:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 640e5f68d6b92f0f749a054ab75b7834 SHA-1: cfb24c3787483e5e30abb2a720942d034c2fa977 SHA-256: 903d74c9878a15942c2cdc3ddc865d9cb5e7f86b4518ea5f7826845d04786b65
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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 https://netcdn.xyz/app/431946152/roblox-zone-free-robux-game-hack PDF link annotation
    • http://muslib.unmus.ac.id/repository/https-iosgodscom-topic-20218flipmastercoinshack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/free-robux-not-fake_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-robux-generator_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-2021-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-coins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/free-rewards-coin-master_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/coin-master-free-coins-app_GM406889139.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-make-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-get-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://muslib.unmus.ac.id//repository/wurst-115-2_GM479516143.pdfIn PDF document text
    • http://muslib.unmus.ac.id/repository/how-to-make-my-own-coin-master-cards-hack_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_003_off0000499b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499B 32876 bytes
SHA-256: 3394b86a1e613cf89c668a6854e335dd97a6a070018d4489a735f2a6834fc445
font_01_sfnt_off000092bd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x92BD 18180 bytes
SHA-256: fa0bfd9229dff732b79349aec0b82eb394b94074e398d1bd7575aad3963e16a1

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