Malicious PDF — malware analysis report

Static analysis result for SHA-256 3afe2d4f17b2f565…

MALICIOUS

PDF

33.7 KB Created: 2021-06-27 20:57:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: bf94859d5a8ef99a255b948cba0ce2b7 SHA-1: c803016c26e4bc604637909ff409771e1d58e4b3 SHA-256: 3afe2d4f17b2f56580e4d952f48bca0bb89118d07f266710437b098ed27c3bf8
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to what appears to be a malicious redirector, disguised as a "Robux Hack" generator. The document body and embedded URLs strongly suggest a lure for users seeking game cheats, which is a common tactic for phishing or malware distribution. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of a malicious workflow.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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 http://netcdn.co/app/431946152/robux-hack-no-human-verification-no-survey-2021-game-hack In PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-1021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/rare-free-links-to-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-version-download-2021-android_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-use-cheat-engine-on-roblox-swordburst-2_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/minecraft-hacker-mask_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-make-my-own-coin-master-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/real-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/robux-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/are-minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-get-free-mods-in-minecraft_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-to-do-nasty-hacks-on-roblox_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_off00002b14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2B14 22060 bytes
SHA-256: 1251c993cc87901c17969ab5988b4c184b7ee8bef6769ce879b15af30d656458
font_01_sfnt_off00005c08.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C08 20036 bytes
SHA-256: 3bd6feab6556557fc4aed63921d6c8caf232a7bbc0569007e22ff65d28a4059f

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