Malicious PDF — malware analysis report

Static analysis result for SHA-256 76ff22ea06227af6…

MALICIOUS

PDF

45.7 KB Created: 2021-05-12 03:15:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 50000444f06792ad9817c984f5284125 SHA-1: b286554bf6aff2e24f1484914b50a6b48799947b SHA-256: 76ff22ea06227af6d2e5af0fc73f2dcced9f2c26b9e688e5c93afc0105c0be78
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to external websites, including one identified as a malicious redirector. The lures used, such as 'free generator / game hack' and 'free robux', are common social engineering tactics to entice users to click on malicious links. The document's primary function appears to be redirecting users to potentially harmful content or further malicious downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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.xyz/app/479516143/how-to-hack-a-minecraft-server-game-hack In PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/apps-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/com-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/free-minecraft-account-generator_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-free-spins-link-2021-march_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/best-free-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-rewards-app_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/original-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-life-hacks_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id/repository/robux-download_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/coin-master-fan-page-giveaway_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/roblox-hack-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/minecraft-hack-download_GM479516143.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/today-coin-master-spin-free_GM406889139.pdfIn PDF document text
    • http://www.perpustakaan.unda.ac.id//repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004cdd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CDD 25372 bytes
SHA-256: 6059bc81c789dc6295fbbae67693f5532388b88184b844dc33d5c386f6691db4
font_01_sfnt_off000086b1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86B1 2892 bytes
SHA-256: c2578a292634a901613c1dd9f9883dd4930e6811e59ae03d696f263e56ea17b4
font_02_sfnt_off0000909a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x909A 18156 bytes
SHA-256: a161276dde2563737e729d23e9d7b4e88663ff4ff7cddafc48ded70db5af995a

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