Malicious PDF — malware analysis report

Static analysis result for SHA-256 4d83b836c03aabb8…

MALICIOUS

PDF

34.3 KB Created: 2021-06-26 14:31:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2f9ab9fe48337ed01aa3ec04aab11cd0 SHA-1: 220a7e75bbb51b87461ee06137d4d49b3f2d5694 SHA-256: 4d83b836c03aabb8885988965a94460825cd0affc10a95cf235a5db58c4c1681
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple links and a call-to-action phrase, luring users to click on what is presented as a game hack or cheat. The primary link, http://netcdn.co/app/431946152/cheats-for-money-on-roblox-for-bloxburg-game-hack, is identified as a redirector to a malicious website. The ML classifier strongly flagged this PDF as malicious, supporting the observed lure.

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/cheats-for-money-on-roblox-for-bloxburg-game-hack PDF link annotation
    • http://library.asih-husada.ac.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/pokemon-go-free-hack-download_GM1094591345.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/minecraft-book-collection_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/legit-coin-master-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-hack-999999-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/cool-roblox-high-school-cheats_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/hack-roblox-robux-free-pastebin-com-https-pastebin-com-qqcutpsq_GM431946152.pdfIn PDF document text
    • http://library.asih-husada.ac.id/repository/who-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002f56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F56 22084 bytes
SHA-256: 5c4fe958fe8573f5cb6ead09bb8d067e53f93c8376ae3d1e107ab95eb1cd8151
font_01_sfnt_off00005feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FEB 19436 bytes
SHA-256: e74aa4a63a7d6997924b850eda5ef010fe1157a47286ebb3d1103a2b7ff14d85

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