Malicious PDF — malware analysis report

Static analysis result for SHA-256 98f5b55ac61a4f63…

MALICIOUS

PDF

43.8 KB Created: 2021-05-17 18:36:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 74b612c06f598e6b299385ccad36341c SHA-1: 1de110c164bf0511c845b7cc49838966287b8ba7 SHA-256: 98f5b55ac61a4f63c6178e07418b06813f8986fc17e191dabdb5145c31d39a7c
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 0.9969

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/free-robux-no-verification-no-download-game-hack PDF link annotation
    • https://tokunfome.com.br/images/minecraft-free-unblocked_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-vpn-for-minecraft_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-hack-coin-master-using-es-file_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/google-how-do-you-get-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-iphone-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-sexually-abused_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/roblox-hack-ga_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-roblox-accounts-with-robux-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a88.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A88 27032 bytes
SHA-256: f21d33f5cc28d5ffbea4834601d8e538ed2bf59bff6cdfb1293524bf339796d9
font_01_sfnt_off000085ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85FF 19180 bytes
SHA-256: 529ad809d39cb86513f1fd0a7c59ac13158e8644a31ce1f1c8620f9d5ad40971

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