Malicious PDF — malware analysis report

Static analysis result for SHA-256 62dc38bb86d0bae6…

MALICIOUS

PDF

43.7 KB Created: 2021-05-15 15:08:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 8625bcb9f00b5cb032234162fcf8828b SHA-1: 2544158c7cf5ae2155ffeeb1757f8bba3de9948d SHA-256: 62dc38bb86d0bae6c7a66420e99f6e38614e4aafca37f5fb886049578efd29aa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded URLs and a heuristic firing for a 'game hack' redirect lure, indicating a social engineering attempt. The document body, though partially corrupted, contains references to 'Coin Master Free Daily Spins' and a primary malicious URL. No scripts were extracted, but the presence of embedded URLs suggests a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/coin-master-free-daily-spins-game-hack PDF link annotation
    • http://finettifrs.it/images/free-minecraft-svg-cutting-files_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/haktuts-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/roblox-earn_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-today_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/demon-roblox_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/how-to-get-gold-cards-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://finettifrs.it/images/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://finettifrs.it/images/minecraft-bedrock-edition-hacks_GM479516143.pdfIn PDF document text
    • http://finettifrs.it/images/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000457e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x457E 24588 bytes
SHA-256: 5ed8463e06150641235de89434101dc202be5022f16820444f1b353c93239120
font_01_sfnt_off00007e4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E4E 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000087ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87FF 18308 bytes
SHA-256: 5c3cefeee4a209382fad51155f4ab19c665f35dca270fe96ae1b58d23c3d8f95

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