Malicious PDF — malware analysis report

Static analysis result for SHA-256 cd516a6ec56ee023…

MALICIOUS

PDF

32.7 KB Created: 2021-06-25 23:55:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: e581803b5711ed1bd5742e5985fb1f6b SHA-1: 11010592b7b2b10d85a970184739c70522a074fb SHA-256: cd516a6ec56ee023bf14a671ad267a128639253fbe136fa84757dace29d207cd
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a high-confidence heuristic indicating it links to a 'free generator / game hack' redirector. The document body and embedded URLs reinforce this lure, directing users to a suspicious URL that likely hosts malicious content or redirects to further phishing/malware sites. No scripts were extracted, but the primary attack vector appears to be social engineering via a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/online-free-roblox-games-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/pp-hack-jailbreak-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-paint-hwo-to-draw-a-realist-eye-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/como-solucionar-el-problema-de-shut-down-roblox-al-hackear_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/camisetas-de-roblox-de-hacker_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/open-roblox-hack-script_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/mad-city-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-jailbreak-hack-pc_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-mod-version-free-download_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-hack-roblox-and-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-build-your-dreams-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/google-site-get-free-robux-roblox-easy_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/robux-place-rewards_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-on-iphone_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_off000029ff.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x29FF 22352 bytes
SHA-256: a78e3aa673ff6ff3ba1eb5def7a4295c9aff77881720c17ccbc17ae3b571f3fa
font_01_sfnt_off00005b4e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B4E 19032 bytes
SHA-256: 893feaed31f1ab24ce978bb3f68614d0f5c6172607ff8e2b64c8d18bf9668075

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