Malicious PDF — malware analysis report

Static analysis result for SHA-256 1c5bb14204ea2a47…

MALICIOUS

PDF

33.5 KB Created: 2021-07-03 14:45:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 208867bd429e44b2881afac28f441a03 SHA-1: e05b5db6596577abd7ea3023a70a3cb68781c6ee SHA-256: 1c5bb14204ea2a47ed85f824599e317206bd6b6ecbabf20196464bca425bd9e7
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it's a lure for game hacks and free currency, directing users to a suspicious URL. The ML classifier strongly flagged this PDF as malicious. The embedded URLs and document body content reinforce the theme of exploiting user interest in free in-game items to drive traffic to potentially harmful sites.

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/431946152/can-you-earn-robux-game-hack PDF link annotation
    • http://library.stieyapan.ac.id/repository/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-robux-codes-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/how-to-ban-people-from-servers-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-tiktok-followers-no-human-verification_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-pocket-edition-apk-free-download_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/spin-free-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-coin-spin_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/roblox-speed-simulator-hack_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-heroes-online_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/hack-in-roblox-2021_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/free-roblox-intros_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/free-tiktok-editor_GM835599320.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/promo-codes-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-free-cards-link_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.stieyapan.ac.id/repository/minecraft-bedrock-edition-free_GM479516143.pdfIn PDF document text
    • http://library.stieyapan.ac.id//repository/roblox-system_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_off00002e66.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E66 21948 bytes
SHA-256: 5b87169bd2fba8cdff1bf4acb39afbaabde2cb1046af71c0a4364322f402d393
font_01_sfnt_off00005ee7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE7 18716 bytes
SHA-256: d39dacb9556eb96443c78b44790360b5af02b47934ec8ff5f00c4bccb246b27c

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