Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bbabb305fb9eade…

MALICIOUS

PDF

44.1 KB Created: 2021-06-03 10:07:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 1ecaa1ff9a3159891e0d2a5a09cc5a6f SHA-1: 821e548b2fe870e645148f8e152d2fac8350d726 SHA-256: 9bbabb305fb9eade298b109a63385ad566bf66c44150b3084bed4f6d90f0eecc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

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 0.9865

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.online/app/479516143/when-was-minecraft-free-game-hack PDF link annotation
    • https://learnwmf.org/image/data/files/is-there-a-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-unlimited-spins-apk_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-free-followers_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-cheat-generator-d_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-do-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/how-to-download-wurst_GM479516143.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/roblox-free-item-codes_GM431946152.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/master-free-spin-and-coin-links-html-m-1_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-hack-pro-gamers-com_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/free-spin-links-coin-master-october-30-2021_GM406889139.pdfIn PDF document text
    • https://learnwmf.org/image/data/files/coin-master-free-spin-trick_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_004_off000051e1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x51E1 25212 bytes
SHA-256: 8ac825c5f7ff350a948bfb525bfd4652ecd3520c257f696a555efd87909e6c2b
font_01_sfnt_off00008aed.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8AED 17932 bytes
SHA-256: 973dc24b982d21c7a26f6b1404f6f01dfc9d6ca8ce5dc51b1335565276afdc72

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