Malicious PDF — malware analysis report

Static analysis result for SHA-256 997bf8a628e0ca08…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 05:09:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 84a676128de1f62cc86f49128d0c4e05 SHA-1: 54164fe16f1e1df8259d855fe484d9179f3d5689 SHA-256: 997bf8a628e0ca0886f50596c3f2a0b7e4e3c71836a5d14235bfd55a1fd75804
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains a lure for game hacks and free currency, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the PDF's structure includes embedded links designed to redirect users to potentially harmful content. No scripts were extracted, but the overall pattern suggests a phishing or malware distribution attempt.

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/431946152/roblox-free-body-block-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-hack-spins-and-coins-unlimited-free_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-get-free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-coin-master-spins-blog_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-cheats-without-verification_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-minecraft-for-free-on-computer_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-robux-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/is-minecraft-free-on-xbox_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-hacks-list_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coinmaster-free-cards_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/robux-websites-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/minecraft-cheat-client_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/how-to-hack-golden-card-in-coin-master_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_off0000526c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x526C 25504 bytes
SHA-256: d276b1b46fa75c981345683a94e9c03a8f187790ceb8078bdc2e615c7e6babf7
font_01_sfnt_off00008c5a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C5A 18472 bytes
SHA-256: 5d885cf15e65211650a74acc3baac16883aac7f09b72dd08baa4827986c8ce3c

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