Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5e422d54d09fc97…

MALICIOUS

PDF

47.9 KB Created: 2021-06-09 00:10:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: adb9b9c3e269b86469b78171b7f59536 SHA-1: 7dfebd116355fbdc68edc14192301465e7857c5b SHA-256: f5e422d54d09fc970b6e3c6d8dff637be2c2a719e25a0198a582603a0fb443f0
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a critical heuristic firing for a game hack redirect lure, pointing to malicious infrastructure. The document body, though heavily obfuscated, contains a URL that matches the heuristic findings. This suggests the primary purpose is to redirect users to a malicious site, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9871

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.tw/app/431946152/rocash-earn-free-robux-game-hack In PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-hack-apk-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/roblox-source_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/roblox-hack-me_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-to-make-a-minecraft-client_GM479516143.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-free-coins-amp_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/no-scam-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coin-master-instagram-free-spins_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-to-get-free-food-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/twitter-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/hack-to-send-gold-cards-on-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/roblox-cheat-codes_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/coinmasterfreespinlink_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/free-spins-and-coins-com_GM406889139.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/roblox-earn_GM431946152.pdfIn PDF document text
    • https://elearning.man1bengkalis.id/__statics/gudangsoal/files/send-me-500-2021-spins_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_off000053ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x53BA 30224 bytes
SHA-256: 8feebe6470966a260a221358f598e97f930b4eeb1dc5e028066c2a19ac272c17
font_01_sfnt_off000098d9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98D9 18408 bytes
SHA-256: 7b50b54aad2f4819eba7dfe90bb971880b0f4b4edb46ef4edc0671ea3379108d

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