Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c44b9d960b831fd…

MALICIOUS

PDF

44.0 KB Created: 2021-06-03 09:35:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: d1a090e1a2abc2878cb7002aa34b3f08 SHA-1: fe1798a59be131755700d00c0d97a99b6f2466cf SHA-256: 9c44b9d960b831fd17733c682dcd9d5174dca5b0672241ac96f28e786864d87e
82 Risk Score

Malware Insights

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

This PDF document contains multiple links, including a prominent one to 'hack-xp-net-generators-coin-master-game-hack'. The heuristic firings indicate this is a lure for game hacks, likely leading to a malicious site. The ML classifier also flagged the PDF as malicious. No scripts were extracted, but the embedded links suggest a phishing or social engineering attack.

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/406889139/hack-xp-net-generators-coin-master-game-hack PDF link annotation
    • http://www.library.umbjm.ac.id/repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spin-sites-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/roblox-sexually_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-fire-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-minecraft-packs_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/como-hackear-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/rbx-free-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-many-tiktok-free-accounts_GM835599320.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/free-spins-coin-master-links-blogger_GM406889139.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/how-to-get-minecraft-for-free-on-ipad_GM479516143.pdfIn PDF document text
    • http://www.library.umbjm.ac.id/repository/show-me-how-to-get-free-robux_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_off00005239.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5239 24704 bytes
SHA-256: 9099d3016d15fc1fbf28ee7a8ccb3a0e47ce8c2488ea02c069d4fd9cfc77faba
font_01_sfnt_off000089b2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x89B2 18120 bytes
SHA-256: 41f850ede6175d492adec327b84fd275484936876492b49157c41c83f2321327

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