Malicious PDF — malware analysis report

Static analysis result for SHA-256 9ec32c0df5dd6c59…

MALICIOUS

PDF

33.2 KB Created: 2021-07-05 15:25:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: d6a87ba26cb92e368fe2395732d60817 SHA-1: a06873b5bb4e6012fc29ce971125360ff51c55cd SHA-256: 9ec32c0df5dd6c590e9068b6ccd8bcef822453225a3da97c2afea2ecb4fa4315
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple links that are designed to lure users into clicking on them by promising game hacks and free items. The primary link, http://netcdn.tw/app/835599320/free-college-textbooks-tiktok-game-hack, is flagged as a redirector, suggesting it leads to malicious content. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs and a download button lure further supports a malicious intent, likely to download a second-stage payload.

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.tw/app/835599320/free-college-textbooks-tiktok-game-hack PDF link annotation
    • http://perpus.wdh.ac.id/repository/how-to-get-hacks-in-roblox-prison-life_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-boxing-simulator-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/minecraft-pocket-edition-download-free-pe-calculator_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/boku-no-roblox-hacked_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/como-hackear-el-juego-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/robux-today_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-hack-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/roblox-planet-hack_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-free-cards-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/rbxoffers-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-rewards_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-hack-mod_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-and-tix-android_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id//repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/coin-master-2021-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/free-mask-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.wdh.ac.id/repository/how-to-cheat-on-your-roblox-girlfriend_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_off00002dd9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DD9 21976 bytes
SHA-256: 7d28ce39706f892415314b32da1125d2e8c757b4bf101925fcfcb26967379b95
font_01_sfnt_off00005e6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6F 18416 bytes
SHA-256: cdc16ca39fa73cf68f8c49219d219fafe3612aafbc02059d1e064d4f5fa2e8db

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