Malicious PDF — malware analysis report

Static analysis result for SHA-256 4168f0a1032bf115…

MALICIOUS

PDF

47.3 KB Created: 2021-06-04 03:55:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 484dc26b9fd2d9517a6cd1fda605e3de SHA-1: 0303528d774feaf1a83be0d5824c5627a7a717b7 SHA-256: 4168f0a1032bf115dc9a503d1035016c2f5bdfed20e7817539f5aa351ac308e6
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a high-confidence heuristic indicating it links to a game hack lure. The document body and numerous extracted URLs reinforce this, pointing to sites offering 'free spins' or 'hacks' for games like Coin Master and Roblox. This suggests the PDF is designed to trick users into visiting malicious sites, likely to download further malware or engage in credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/406889139/coin-master-free-spin-generator-without-human-verification-game-hack PDF link annotation
    • http://digilib.stimata.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/corn-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-100-robux-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/google-play-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-2021-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-hack-software_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/roblox-character-free_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/minecraft-bedrock-download_GM479516143.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-links-for-free-spins_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/free-robux-codes-not-used_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/how-to-get-a-free-dominus-in-roblox_GM431946152.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-daily-spins-today_GM406889139.pdfIn PDF document text
    • http://digilib.stimata.ac.id/repository/coin-master-free-spin-app-apk_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_004_off000053ca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53CA 29832 bytes
SHA-256: 657a8fe3a18e2c18a9c7b204e6a26bf0ca805aea12eb2afc6a56de5fd7f27e77
font_01_sfnt_off00009543.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9543 18784 bytes
SHA-256: 560f5148e24a3ab67e773876ce527874ae2d943094ab10326a5f2249ef84e33a

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