Malicious PDF — malware analysis report

Static analysis result for SHA-256 c50b2f02e29b3c03…

MALICIOUS

PDF

45.2 KB Created: 2021-05-14 04:35:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: c29544af5b75c4f00e7b4e8e35aee843 SHA-1: dda7a5310a0aa7f5d369dad95ae2a1556bfc7f61 SHA-256: c50b2f02e29b3c03d781778f2fa00cb84b020b533c1000ed7ea75a1529a795df
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links and a lure related to 'free generator / game hack' which is a common social engineering tactic. The ML classifier also flagged this PDF as malicious. The document's primary function appears to be redirecting users to external sites, likely for phishing or to download further malware.

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 https://netcdn.xyz/app/431946152/robux-free-gift-card-game-hack PDF link annotation
    • https://hbpbenin.com/images/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/free-robux-gen_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/free-bedrock-minecraft_GM479516143.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-hack-apk-ios_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/free-robux-com-real_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-hack-without-verification-code_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • https://hbpbenin.com/images/the-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/coin-master-free-spins-app-android_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/pop-slots-free-vegas-casino-slots-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/free-spins-coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://hbpbenin.com/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/free-roblox-templates_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://hbpbenin.com/images/free-face-roblox_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_off000048dd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48DD 31096 bytes
SHA-256: bd1bfd75bba5776857581866c5296e1043b5a9be25ac6b258d330fdb244bd0cf
font_01_sfnt_off00008d2e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D2E 18640 bytes
SHA-256: 299b54e9041e0eacb2b5f4a1a09a85f1fb6c0d753f38c204f1d1c9ff56031a85

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