Malicious PDF — malware analysis report

Static analysis result for SHA-256 7286c6fc47eab6cd…

MALICIOUS

PDF

34.7 KB Created: 2021-07-06 07:13:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c8301a13d45dc2bbeeb92b086ca9f10d SHA-1: 1c86cc0fd6a98f1eaf7b549dad5f3ae542372c03 SHA-256: 7286c6fc47eab6cd0b0d55e024179342fd488efa6215e5bb64478a6168ccd7d7
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-mod-apk-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/roblox-cheat-codes-list_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-codes-2021-not-used_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-hack-roblox-on-mobile_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-hack_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-a-free-keycard-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-twitter_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-cheat-geld-deutsch_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-apk-2021-download_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hacks-para-tener-robux-gratis_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/cute-roblox-clothes-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-capes_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-tiktok-followers-without-downloading-apps_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-survival-hacks_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-magic-simulator-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-websites-no-human-verification_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-robux-fast_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-ios-2021_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_off000031d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x31D2 22752 bytes
SHA-256: 49f1f05eaad8286366fb98c52388292b12621f0e3c3ff820e17fc22b14e08400
font_01_sfnt_off0000649c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x649C 18352 bytes
SHA-256: 8921705bb0180ef928bfc54a8bff441144a325a835df77ae2345570de02769c4

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