Malicious PDF — malware analysis report

Static analysis result for SHA-256 dd31ce5363052ac7…

MALICIOUS

PDF

42.4 KB Created: 2021-05-16 12:22:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 91098f1aefec01c30d587488e8afd6cf SHA-1: 1286954a5e96580a0ffe8c1a2e20e469b2680aea SHA-256: dd31ce5363052ac7989d32427c4a5931766deb8427b3ddfa633e2a8719adfca7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting "game hacks" and "free generators" for popular games. The primary lure URL is https://netcdn.xyz/app/479516143/minecraft-java-free-trial-game-hack, which is associated with known malicious redirector activity. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering tactic to drive users to potentially malicious sites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/minecraft-java-free-trial-game-hack In PDF document text
    • http://kita-sunshine.de/images/fbchampion_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://kita-sunshine.de/images/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-hack-no-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-robux-stream_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-mod_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-spin-card-exchange-coin-master_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/how-to-get-1-million-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-free-spins-link-fb_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/free-robux-without-any-verification_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/roblox-hack-me_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/i-got-hacked-on-roblox_GM431946152.pdfIn PDF document text
    • http://kita-sunshine.de/images/coin-master-hack-https-coinms-net_GM406889139.pdfIn PDF document text
    • http://kita-sunshine.de/images/robux-generator-no-human-verification-2021_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
stream_003_off00004b16.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B16 25392 bytes
SHA-256: f200510157de0b7491a314d01ec0b99cb1da81aba052c8c5eee9edca125d28b5
font_01_sfnt_off00008478.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8478 17924 bytes
SHA-256: d296bfe87a6dc97e41f58611965175a9d8d851c6709ce0e2d245db43bc469752

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