Malicious PDF — malware analysis report

Static analysis result for SHA-256 6815b9c08a3ee6d3…

MALICIOUS

PDF

45.2 KB Created: 2021-05-16 20:42:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1f7d95720a294be5cbd7c6579f0d029d SHA-1: 0d344d8172bd8b774feff772281a0be33837a032 SHA-256: 6815b9c08a3ee6d3cfbfcf56a18dde191bf4b555f084eb1ac0cccbe938486bb5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are flagged as malicious redirectors, specifically promoting 'free generator / game hack' lures for popular games. The document body and embedded URLs suggest a social engineering tactic to trick users into visiting these sites, which likely serve as a gateway to further malicious content or exploits. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9621

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/coin-master-free-spins-daily-game-hack In PDF document text
    • http://dorfgaragethalwil.ch/images/free-spin-and-coin_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/roblox-download-pc-free_GM431946152.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/coin-master-extra-spins_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/minecraft-free-online-unblocked_GM479516143.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/free-robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/coin-master-homepage_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/coin-master-daily-free-spins-link-app-download_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/free-spins-coin-master-android_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/corn-master_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/free-robux-glitch-2021_GM431946152.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/coin-master-free-spins-hack-ios_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/roblox-hacking-website_GM431946152.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://dorfgaragethalwil.ch/images/minecraft-free-download-ios_GM479516143.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_off00004a2a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A2A 25220 bytes
SHA-256: 3ed111f97c3ddc740662748dba6f5af0d061f508ddbd729d71a498f40dba06e1
font_01_sfnt_off0000842e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842E 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008ddf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DDF 18308 bytes
SHA-256: 220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9

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