Malicious PDF — malware analysis report

Static analysis result for SHA-256 5603dd4014902d85…

MALICIOUS

PDF

44.1 KB Created: 2021-05-18 01:13:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 78ba05084c7d443205fd2958a6884f68 SHA-1: 915d949d8efad43e56632c9a9dedc2cbd285b751 SHA-256: 5603dd4014902d850886a37816b8ec0fe97e2da03d52e36fa880f8dd79fa55c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to a website advertising game hacks and free spins, a common lure for phishing or scam operations. The document body, though partially corrupted, contains references to these lures and the authoring application 'wkhtmltopdf', suggesting it was generated to appear as a legitimate document. The presence of multiple redirector links indicates a deliberate attempt to lead users to potentially malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/406889139/moonactive-free-spins-game-hack In PDF document text
    • https://tokunfome.com.br/images/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-coin-master-coins-2021_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-pet-snacks-in-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-alt-accounts-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-minecraft-alts_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-collect-today-free-spin_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-send-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/fb-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://tokunfome.com.br/images/free-robux-site_GM431946152.pdfIn PDF document text
    • https://tokunfome.com.br/images/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • https://tokunfome.com.br/images/how-to-get-free-spins-on-coin-master-facebook_GM406889139.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_off000048c4.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48C4 24844 bytes
SHA-256: fca06187a052402870edfd238246d679e353192f49da13594be90007472a299a
font_01_sfnt_off0000809b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x809B 2896 bytes
SHA-256: c1a618813a64314343402b2ec738fc11c4c912460a4c7ae3029924d2f9a229cd
font_02_sfnt_off00008a81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A81 18000 bytes
SHA-256: 525e065cc595701650099d1f547d5a2db26dd24a903bd4cc3081529fc79bef99

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