Malicious PDF — malware analysis report

Static analysis result for SHA-256 6ad4f89f6e12d307…

MALICIOUS

PDF

40.9 KB Created: 2021-05-15 12:20:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7e6334aeb2370f09eefcbb04ced4fc38 SHA-1: bcb95d29b69c98d4fdeb64b9237c31a00d2979ec SHA-256: 6ad4f89f6e12d307e3c7c1866c80ef98601d09831559098ecebf3182287c99ca
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links disguised as generators or hacks for popular games, such as Coin Master and Roblox. These links redirect to malicious infrastructure, including the primary URL https://netcdn.xyz/app/406889139/free-coin-master-generator-game-hack. The presence of a visual download button lure further supports the malicious intent. While no scripts were explicitly extracted, the PDF structure and embedded links strongly indicate a social engineering attack designed to lead users to potentially malicious content or downloads.

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/406889139/free-coin-master-generator-game-hack In PDF document text
    • http://alroglobal.com/images/free-spin-coin-master-instagram_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/coin-master-hack-android-root_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/real-robux-codes_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/coin-master-hacks-for-iphone_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://alroglobal.com/images/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/minecraft-for-ipad-free_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://alroglobal.com/images/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/coin-master-free-spin-link-app_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://alroglobal.com/images/free-robux-just-click_GM431946152.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_003_off0000475d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x475D 25444 bytes
SHA-256: f9b937280c64e300bda6c16481f9acd3102456a6f984994c664b52688615fd58
font_01_sfnt_off00007f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F0B 17712 bytes
SHA-256: 257a612313d270105d122f3198241e5dbbd2f563e6a420601a0e3220659a58bd

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