Malicious PDF — malware analysis report

Static analysis result for SHA-256 0619f4bfd2aa70f5…

MALICIOUS

PDF

35.8 KB Created: 2021-06-18 15:21:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 5c59641c78b85cf4f6ce866952661f3c SHA-1: 9116752f68b33a803a7ee0db2c186aa6a25a1f4d SHA-256: 0619f4bfd2aa70f59b323eb305ac0235219e2a1e2a20f3e43a2640c969b24bd3
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains numerous links disguised as game hacks and free currency generators for popular games like Roblox. The primary URL, http://netcdn.co/app/431946152/actual-hack-generator-roblox-game-hack, is a high-risk indicator. The document's structure and content strongly suggest a lure to a phishing or malware distribution site, masquerading as a helpful resource.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/actual-hack-generator-roblox-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/free-accessories-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-get-roblox-money_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox36com-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-pet-food-in-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-tiktok-like_GM835599320.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-roblox-accounts-with-obc-and-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-no-human-verification-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-2021-no-verification_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-do-you-earn-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-codes-to-get-free-stuff-2021_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-exploit-with-cheat-engine-on-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-free-robux-codes-2021-december_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-zombie-attack-hack-script_GM431946152.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_off000034ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34CA 22616 bytes
SHA-256: 46def19ab287dbbe8ab5b5a6d9398ebb430250a1d286c6386008d563632740bb
font_01_sfnt_off00006737.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6737 18900 bytes
SHA-256: d6b1ea138cd72eb3d06f87e38d7cc8f6f0dff109f7be29d842e0f487ab7f6aa7

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