Malicious PDF — malware analysis report

Static analysis result for SHA-256 2d69ed4692301620…

MALICIOUS

PDF

44.4 KB Created: 2021-06-08 14:36:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-24
MD5: bc796d55fd2e08d5cd0fb7197bdc9fdc SHA-1: 4b92286f1727a48ca9f9a730c2e8ac357eafe16e SHA-256: 2d69ed4692301620a7477e549bc8ca6550ebe5a270be485b7961ed824653db0d
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 0.9865

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.tw/app/431946152/how-to-get-free-robux-fast-and-easy-2021-game-hack PDF link annotation
    • http://perpus.i2s-learning.com/repository/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-co_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/inappropriate-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-tiktok-followers-trial_GM835599320.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-spin-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-girl-hair-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-robux-just-click_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/what-is-wurst_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/btool-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/get-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/play-minecraft-free-online-no-download_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-cards-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_004_off00004f32.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F32 24824 bytes
SHA-256: 26ee88a5cc2aaf98cdef364f862c431be68c8da862415221e80e708e5617a1b5
font_01_sfnt_off000087c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C8 19264 bytes
SHA-256: ff00de19120b309547e6d6cb8726af1086792e5fa66b7a4f4a49ba5bba3ff907

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