Malicious PDF — malware analysis report

Static analysis result for SHA-256 68642a4640837b18…

MALICIOUS

PDF

47.0 KB Created: 2021-06-03 10:17:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f5ea7f54de1e7dc9b07777a759aa7f60 SHA-1: f5500db183e05a3cc368e89c9ef5378f9f6ccc7a SHA-256: 68642a4640837b18dbf2144cbb4f79e3bd2eed9c85405a36248874f15a64bab3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including one identified as a malicious redirector, disguised as a 'free generator / game hack'. The document body, though partially corrupted, suggests a lure related to obtaining free in-game currency or items. The presence of embedded URLs and the nature of the lures strongly indicate a phishing or scam attempt designed to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9832

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.online/app/431946152/how-to-get-free-robux-fast-and-easy-game-hack In PDF document text
    • http://perpus.i2s-learning.com//repository/haktuts-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-do-you-get-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/coin-master-free-card-link-today_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-hack-android-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-roblox-premium_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/buy-tiktok-followers-free_GM835599320.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/coin-master-free-spins-link-october-2021_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/free-roblox-gift-card_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.i2s-learning.com/repository/promo-code-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.i2s-learning.com//repository/fb-coin-master-hack_GM406889139.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_off00005556.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5556 26492 bytes
SHA-256: f65206227780545fa2b4e4e63183236b3ae6e8ccaca3b16371b183a31778cde0
font_01_sfnt_off00009372.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9372 18864 bytes
SHA-256: 264ac3d9ee16189788a918c90b00fec891485e046f110455159a23ab28eb8c09

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