Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a4ed5ccb58febe1…

MALICIOUS

PDF

35.6 KB Created: 2021-06-26 03:16:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 6fbb725cc83c67cfa2625e317102e4e2 SHA-1: 2fbb4dab89f78799e1d77f422c2893239e03775b SHA-256: 0a4ed5ccb58febe1c6e5febdc2671dc37289f7b4b55eb3d9992c7f55c5989799
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that act as lures for free game hacks and generators, such as 'Counter Blox Roblox Offensive Hacks 2021'. The primary URL, http://netcdn.co/app/431946152/counter-blox-roblox-offensive-hacks-2021-game-hack, is identified as a redirector. This suggests the document's purpose is to lead the user to a malicious site, likely for further exploitation or malware delivery. No scripts were extracted, but the PDF structure and embedded links strongly indicate a phishing or social engineering attack.

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.co/app/431946152/counter-blox-roblox-offensive-hacks-2021-game-hack PDF link annotation
    • http://library.stiks-tarakanita.ac.id/repository/roblox-ban_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-minecraft-windows-10-for-free-2021_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-get-minecraft-bedrock-edition-for-free_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-tiktok-followers-app_GM835599320.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/get-free-robux-for-watching-ads_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-roblox-pin-codes_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-coins-generator_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-candy-van-script-roblox_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/hack-roblox-sans-verification-humaine_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-free-spins-link-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/free-spins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/my-roblox-account-got-hacked_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/robux-get-com-free_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/rbxcity-roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://library.stiks-tarakanita.ac.id/repository/coin-master-hack-ios-without-verification_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
font_00_sfnt_off000032f3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32F3 22196 bytes
SHA-256: 6f6a9fc3b50dbb4da30c428307aaf4d8890390d74eeb5a1f91cebb846e711f10
font_01_sfnt_off00006473.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6473 19536 bytes
SHA-256: 79214a24b664af52a262a75b87da172f391e051f7b7a22a375686560b0904378

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