Malicious PDF — malware analysis report

Static analysis result for SHA-256 ffd1e2221d7343ae…

MALICIOUS

PDF

41.7 KB Created: 2021-05-12 01:34:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ae00315c5069a6709cdd555326436222 SHA-1: 1774c354628bf3804331e87acb7fdbb2dcf4545f SHA-256: ffd1e2221d7343ae8b22310c1c52db2a3c769368f9c068670e9084e14c92fd9a
82 Risk Score

Malware Insights

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

The PDF contains multiple links and a heuristic firing indicating it's a 'game hack' lure, directing users to potentially malicious sites. The document body, though heavily obfuscated, contains a URL that aligns with the heuristic findings. The presence of numerous similar URLs further supports the malicious intent of redirecting users for fraudulent purposes.

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/coin-master-free-spin-27-game-hack PDF link annotation
    • https://www.jjpremiers.com/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/minecraft-fly-hack_GM479516143.pdfIn PDF document text
    • http://jjpremiers.com/files/free-spin-coin-master-online_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-twitter_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-hack-apk-april-12-2021_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-spins-coin-master-no-survey_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/free-spins-coin-master-links-thursday-november-28-2021_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.jjpremiers.com/files/robux-today_GM431946152.pdfIn PDF document text
    • http://jjpremiers.com/files/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://jjpremiers.com/files/how-many-levels-are-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/free-minecraft-generator_GM479516143.pdfIn PDF document text
    • https://www.jjpremiers.com/files/hack-coin-master-iphone_GM406889139.pdfIn PDF document text
    • https://www.jjpremiers.com/files/coin-master-mod-apk-latest-hack-with-unlimited-free-spins_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_off000049de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49DE 24196 bytes
SHA-256: f9d26c1632e176dfa3b48ec5eea5f14440ed11ebc7e684e4597deb5382b00a26
font_01_sfnt_off0000815a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x815A 18064 bytes
SHA-256: e5d4af430e647cf7cb0e22ed46cbaed1bc4db951ce3e04e592ed76e802cdb32e

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