Malicious PDF — malware analysis report

Static analysis result for SHA-256 1ace5e1d690b9845…

MALICIOUS

PDF

41.3 KB Created: 2021-05-13 05:34:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b5326290c802c5ed0c65994b71b910d0 SHA-1: 81a1992c1b64d795354718e3db8f75b5e3ada5cd SHA-256: 1ace5e1d690b9845d78b5194e291452d071356113eb0fbce33a02722c581987c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high-confidence heuristic firing for a game hack lure, directing users to a suspicious URL. The document body, though heavily obfuscated, contains references to game hacks and generators, reinforcing the lure. The ML classifier also strongly flagged this PDF as malicious. The primary IOC is the redirect URL which likely leads to a further stage of infection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/free-coin-master-links-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-complete-handbook_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-net_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/games-like-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-coins-and-spins-group_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-hack-scripts-pastebin_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/minecraft-bedrock-edition-pc-download-free_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-codes-generator-no-verification_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/weird-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-2021-today_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-stuff-that-cost-coins-free-mcpe-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-do-you-get-free-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-gifts_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/websites-that-give-free-robux_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_off00004af8.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AF8 23532 bytes
SHA-256: 39d4a448363422565058ae12d9aba776216625ebe60236e81ac1aee2701cbc06
font_01_sfnt_off00008032.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8032 17880 bytes
SHA-256: dfe41e252eeea42f6a4072e9595d4435e06b86b6ad2d398cb4b971b8bcb02477

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