Malicious PDF — malware analysis report

Static analysis result for SHA-256 0179f66763e56441…

MALICIOUS

PDF

43.4 KB Created: 2021-06-03 10:53:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f038697a234240e3601f977e072fc4e1 SHA-1: da11cb5027ea01dd853168e39c4febbe8064d3ee SHA-256: 0179f66763e564412a610b9ddc389ae4b58c9d6b64db24d4f7a598fba090b483
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirector infrastructure, specifically promoting "game hacks" and "free generators" for popular games. The primary lure URL is https://netcdn.online/app/406889139/coin-master-free-gold-cards-game-hack, which is flagged as a malicious redirector. The document body, though partially obfuscated, contains similar URLs, reinforcing the malicious intent to redirect users to potentially harmful content. No scripts were extracted, but the embedded URLs and heuristic firings strongly indicate a redirection attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

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.online/app/406889139/coin-master-free-gold-cards-game-hack In PDF document text
    • https://ifef.es/ckfinder/userfiles/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-online-generator-for-coin-master_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/win-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/minecraft-bedrock-free-with-java_GM479516143.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-net_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/robloxheroxyz-free-robux_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-generator-2021_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-map_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/free-robux-come_GM431946152.pdfIn PDF document text
    • https://ifef.es/ckfinder/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000501a.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x501A 25104 bytes
SHA-256: 9db17f2539d0cdc3ff15441f36306e851e21978a792c39a401a747fe366a8507
font_01_sfnt_off00008816.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8816 17960 bytes
SHA-256: aba9a61c61b61fea048b73d77d5e297f3d5a3a83c57e433c8854d820da1f91b9

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