Malicious PDF — malware analysis report

Static analysis result for SHA-256 13068f7bcf78d1a3…

MALICIOUS

PDF

33.3 KB Created: 2021-07-05 02:47:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: c3c72f374f1f00289b21481bb4aecc35 SHA-1: 4e9d77c6de921ab193c9227a382c7fee15ad1e48 SHA-256: 13068f7bcf78d1a3ede40c99764bfed67cee4809c5b4e68b2aff6f829c23b825
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 0.9980

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/406889139/coin-master-hack-100-working-game-hack PDF link annotation
    • https://sunnygarden.com.tw/image/data/files/roblox-admin-badge-free_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-free-robux-on-tablet-easy_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-hack-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-unused-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/earn-robux-websites_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-cheat-on-roblox-guess-that-song_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-panda-mask-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-free-spins-and-coins-haktuts_GM406889139.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/free-run-animation-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/hacked-shirts-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-account-hacker-tool_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/hacks-to-g-et-into-houses-on-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/april-fools-hack-roblox-wiki_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/roblox-robux-hack_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • https://sunnygarden.com.tw/image/data/files/coin-master-hack_GM406889139.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_002_off00002c2d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2C2D 22464 bytes
SHA-256: cf17e72785c7defb60f3b9cbaad1e87ec21bfb192e55392bfb9712b22d1afa24
font_01_sfnt_off00005e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E66 18480 bytes
SHA-256: 4deb687acd323bf9668adf7f6443399c29d9f2c86793632556f948df274d5cf0

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