Malicious PDF — malware analysis report

Static analysis result for SHA-256 33ed54a8468d2dc4…

MALICIOUS

PDF

43.3 KB Created: 2021-06-03 11:17:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 348274387350003e53cf11888e7c8cc9 SHA-1: 5980b9790870daa07e5eb077ffe88c859905a20b SHA-256: 33ed54a8468d2dc49569899ca1d9405e8ea478af4b6ce6f856991cbac82ed5f9
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains a lure related to game hacks, specifically mentioning 'Pubg Uc Redeem' and linking to a URL that also advertises game hacks. The ML classifier strongly flagged this PDF as malicious. The embedded URLs suggest a phishing or scam attempt to lure users to potentially malicious sites that may host further exploits or malware.

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/1330123889/pubg-uc-redeem-game-hack PDF link annotation
    • http://perpus.masda.ac.id//repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-get-roblox-credit-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/tiktok-free-google-home-mini_GM835599320.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/is-roblox-free-on-ps4_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-mast-hacks_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/minecraft-free-download-no-virus_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-robux-no-human-verify_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-roblox-accounts-dantdm_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/coin-master-download_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/websites-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus.masda.ac.id//repository/free-coin-master-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/minecraft-app-store-free_GM479516143.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/hack-the-coin-master-game_GM406889139.pdfIn PDF document text
    • http://perpus.masda.ac.id/repository/boost9-com-roblox-hack_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
stream_004_off00004b3d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B3D 26892 bytes
SHA-256: e51d83a905e54dce2a1ae685d6c1a6883b7caf810c28695c872c62c51b9386eb
font_01_sfnt_off00008665.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8665 18332 bytes
SHA-256: 4fb7fb27c6c1b489663bc36ca902b8701750e8ab0b30b1c0eadea9dbccdae60e

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