Malicious PDF — malware analysis report

Static analysis result for SHA-256 7a5aa0326c2f7d1d…

MALICIOUS

PDF

43.6 KB Created: 2021-05-16 17:02:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 74ea56d39b7756be4e11a6170c495642 SHA-1: 5ff5433ad45107a0816ccbbaeb51f5d6c2348572 SHA-256: 7a5aa0326c2f7d1dbf8b2fdfba4cee491d97aa34242b00a1dfae9354087db9b3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

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/431946152/free-robux-without-survey-game-hack PDF link annotation
    • http://www.domkiletniskowe-wladyslawowo.pl/images/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/roblox-script-hacks_GM431946152.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/minecraft-112-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/coin-master-no-download-app-but-play-for-free_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/robux-free-gift-card_GM431946152.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/daily-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/microsoft-rewards-roblox_GM431946152.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/apk-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/free-spin-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/mcpe-com_GM479516143.pdfIn PDF document text
    • http://www.domkiletniskowe-wladyslawowo.pl/images/how-to-hack-someones-roblox-account_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_off00004aaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AAF 25716 bytes
SHA-256: 23a0af588d8e229debd0053c8e95c40ff41b05eab0996dbba063e1d5ab5a8557
font_01_sfnt_off0000866c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x866C 18896 bytes
SHA-256: b0c1a7c96aa264be318e1ab456a0b915a72e0bc05fcf36e1ad74b726c9d43bb5