Malicious PDF — malware analysis report

Static analysis result for SHA-256 62bf830af8a73c62…

MALICIOUS

PDF

40.7 KB Created: 2021-05-17 02:30:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: a882fb36cf94e4b58940a9dc8912c59d SHA-1: 0c458d596a6b6f6af844344dc40f6a1c80d0c6d4 SHA-256: 62bf830af8a73c625313ab42aec2a2fff2e24f4c30262a6ebbdb642c53c47439
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a heuristic firing for a 'game hack' redirect lure, strongly suggesting a phishing or scam attempt. The document body, though partially corrupted, contains text related to 'Coin Master' and 'game hack', reinforcing the lure. The primary malicious action appears to be directing the user to external, potentially malicious, websites.

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-ios-gods-hack-game-hack PDF link annotation
    • http://geometraperiotto.it/images/free-minecraft-java-edition-codes_GM479516143.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-please_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/cheat-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-apk-hack_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-no-verification-required_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-hack-pro_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-free-coins-and-spins-link_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://geometraperiotto.it/images/coin-master-free-spins-that-really_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/minecraft-apk-android-free_GM479516143.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-robux-easy_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-roebucks_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-roblox-toys_GM431946152.pdfIn PDF document text
    • http://geometraperiotto.it/images/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://geometraperiotto.it/images/how-to-find-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://geometraperiotto.it/images/free-daily-spins-and-coins-for-coin-master_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
font_00_sfnt_off00004708.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4708 24148 bytes
SHA-256: e5d87db7bb535bf64d71e528a60e13d228e5c21496821e499e7e5e4f835ace90
font_01_sfnt_off00007ddb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7DDB 17888 bytes
SHA-256: d8eea4be3fc99e1ecb7ba73b2b91be59596119d2ac4c670f115fb590b846a8a2

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