Malicious PDF — malware analysis report

Static analysis result for SHA-256 a17a43bdbfe0fda3…

MALICIOUS

PDF

43.9 KB Created: 2021-05-14 11:05:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: f11ac63c35843864b7f1a100d562891b SHA-1: 10d1cd5710cebd5a6cc9b1ea6cd98dc2ac10fc23 SHA-256: a17a43bdbfe0fda357c6553934f05ada1660b4e17dbba3967b86029b8f5d47ba
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic firing for linking to a game hack redirector, specifically targeting Coin Master and Roblox. The embedded URL leads to a suspicious domain that likely hosts a malicious payload or phishing content. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering lure to trick users into visiting a compromised site.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/how-to-earn-free-spin-in-coin-master-game-hack PDF link annotation
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-robux-generator-http-freerobuxgenerator-xyz_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-kid-friendly-no-human-verification_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-games-on-roblox_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-tiradas-gratis-2021_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-free-spins-may-11-2021_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-coin-master-androd-cheats-2021_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-hack-fast_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-hack-trick-2021_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/roblox-report-hacker_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-daily-free-spins-link-today-2021_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/can-you-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://mtsn1sungaipenuh.id/__statics/gudangsoal/files/websites-that-give-free-robux_GM431946152.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_off00004bd6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BD6 27340 bytes
SHA-256: c6e28614cbca5a562075e90c926037ea1115aa13e2c73ca3767793dcbd0a1499
font_01_sfnt_off000089ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89EF 18052 bytes
SHA-256: c8469be4e135a939fdcd4d5c4316a8d7a284a9925859706409da67ce72f50dba

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