Malicious PDF — malware analysis report

Static analysis result for SHA-256 94019f05b067629d…

MALICIOUS

PDF

41.5 KB Created: 2021-05-13 16:06:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3df35b4c0577827b3d8ccaebe68f0ce7 SHA-1: 5c0d0e4293525e3d8f0f6b6f7317c5937b7a794f SHA-256: 94019f05b067629df5edb58ee3cd6f2278a85c0dc75cf8b741df35e064b1b275
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically promoting 'free generator / game hack' lures. The document body, though partially corrupted, contains similar redirector URLs. The presence of these links and the heuristic firings strongly indicate a phishing or scam attempt designed to lead users to potentially malicious websites.

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-spins-on-coin-master-link-game-hack In PDF document text
    • http://bit-sky.com/images/roblox-inappropriate-games_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-robux-codes-2021-real_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/infinite-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-use-scripts-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/is-roblox-free-on-xbox_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/minecraft-mod-menu-apk_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/unlimited-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/jailbreak-roblox-hack_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/free-roblox-app_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/ios-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/minecraft-free-download-ipad_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/is-minecraft-free_GM479516143.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_off00004626.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4626 25328 bytes
SHA-256: dcd3432e67f765bae52f93e690614e630abcd8e4825c6c36b298812b91ddb111
font_01_sfnt_off000080a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80A8 18056 bytes
SHA-256: 892ebf3b86ae534fd3f474e2c239da2a9bb4dc91f8225dc09222a78aadec1336