Malicious PDF — malware analysis report

Static analysis result for SHA-256 07919994b80e6f04…

MALICIOUS

PDF

44.7 KB Created: 2021-06-10 15:10:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5596e4671cb3e2065740b9ddc10b4fea SHA-1: b98a2d2440a048c9c33430b1d3bc2999a064bf0e SHA-256: 07919994b80e6f04d835bfccdab008ac8ce24b95d7d9e77494a631f9aa9ad4fa
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacking, specifically for Roblox and Coin Master, directing users to a suspicious URL. The ML classifier strongly indicated maliciousness, and the presence of multiple game-related lures suggests a social engineering attempt to drive traffic to potentially malicious sites. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

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.tw/app/431946152/hacking-roblox-copyright-game-hack PDF link annotation
    • http://perpus.fisip.unnur.ac.id/repository/how-to-get-free-coins-in-mcpe-master_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-hack-site_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-com-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-ios-download_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/roblox-hacked-maps_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-spins-apk-download_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-hack-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-coin-master-spins-hack_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/earn-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/coin-master-link-for-spins_GM406889139.pdfIn PDF document text
    • http://perpus.fisip.unnur.ac.id/repository/tiktok-free-3d_GM835599320.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_off00004f7a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F7A 25652 bytes
SHA-256: c11259bd174090c1f0fe8540e3a7e67a5a5c796fd210909f216b4c3bba93d5b1
font_01_sfnt_off0000895b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x895B 19216 bytes
SHA-256: cafe5a3d6ef289d6b8297d0358294d0e498e164dfa3b3b9a6873d6cb91615d62

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