Malicious PDF — malware analysis report

Static analysis result for SHA-256 b470fc26e5603654…

MALICIOUS

PDF

43.5 KB Created: 2021-05-16 04:07:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 247903e1c3a7a7d5138728cc77f08d0c SHA-1: f96baaf97fd793064ba5ffae1ccef4e9fffb2bf6 SHA-256: b470fc26e5603654ec7eb8e5a5cfff52bb0477ec03686e9b06af419cf1fcde39
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and infrastructure, disguised as 'free generators' or 'game hacks' for popular games like Roblox and Coin Master. The ML classifier also strongly indicated maliciousness. The primary attack pattern involves luring the user to click these links, likely leading to further malware downloads or phishing pages.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/431946152/free-roblox-pin-codes-game-hack In PDF document text
    • http://jakthund.org/images/coin-master-game-legitimate-hack-without-signing-up-or-shareing_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-gifts_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/girl-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-free-500-spins-link_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/spin-coin_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-stop-attack-hack_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-spin-hack-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-daily-free-spin-and-coin-link-haktuts_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-free-spins-generator-no-verification_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-spin-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/coin-master-free-spins-links-2021_GM406889139.pdfIn PDF document text
    • http://jakthund.org/images/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/robux-in_GM431946152.pdfIn PDF document text
    • http://jakthund.org/images/official-coin-master-free-spins_GM406889139.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_off00004cdd.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CDD 25312 bytes
SHA-256: 4344a2650f32e122e229a06e56d776e768b1e1589359452a64521dc95ba4b5bd
font_01_sfnt_off000087a6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87A6 18396 bytes
SHA-256: f52dc14ee7e448aa0f674abe902bf1c93ecce416da154576fb4a0807dea580f0

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