Malicious PDF — malware analysis report

Static analysis result for SHA-256 c1a3569fbf9e360f…

MALICIOUS

PDF

32.9 KB Created: 2021-06-18 07:31:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 0530515e8c957f58d60714cf54e48bab SHA-1: df95125138356d5a8e12134eb5c48fb0eed5a5b9 SHA-256: c1a3569fbf9e360f94fd0b85a3667831e87344b057186b0c58cd19c232eb26be
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to websites offering game hacks and cheats, specifically targeting popular games like Roblox and Minecraft. The primary lure, 'Hacks For Roblox Giant Simulator', directs users to a suspicious URL, indicating a likely attempt to redirect users to a malicious download or phishing page. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/hacks-for-roblox-giant-simulator-game-hack PDF link annotation
    • http://sbm-nn.ru/images/how-to-get-minecraft-pe-for-free-ios_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/robuxian-com-free-robux-code-generator_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-royale-high-diamond-hack_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-roblox_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-roblox-promo-codes-2021-august_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-mcdonald-tycoon-cheat_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-114-4-download_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/hackear-coin-master-android_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/get-unlimited-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/the-conquerors-roblox-pre-hacked_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/roblox-exploit-for-free_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/minecraft-free-download-android-apk_GM479516143.pdfIn PDF document text
    • http://sbm-nn.ru/images/coin-master-free-online_GM406889139.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/robux-in_GM431946152.pdfIn PDF document text
    • http://sbm-nn.ru/images/how-do-people-hack-roblox-servers_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
font_00_sfnt_off00002cd5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CD5 21252 bytes
SHA-256: c8e156b2fcccf8c89da479a46bb47fdf4734a444d4f4515c476a324a3af15a89
font_01_sfnt_off00005b1e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B1E 19260 bytes
SHA-256: f39f155016a87038a300563212affc0b9b1104f398e2e2e57edd8afe0a2ef08c

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