Malicious PDF — malware analysis report

Static analysis result for SHA-256 306d5b649d8a3376…

MALICIOUS

PDF

43.5 KB Created: 2021-05-13 23:36:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ea64ce4a3278abaffd7788415d61dde7 SHA-1: aa748a665093ea409b49088c925dceb141591094 SHA-256: 306d5b649d8a3376c220a9298511e0344e28bd045e1be8fdf09b73d43ca92343
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document employs a lure related to game hacking to trick users into clicking a link. The link redirects to malicious infrastructure, indicating a phishing or social engineering attack. The presence of multiple redirector links and the ML classifier's high confidence score support this assessment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/how-to-hack-coins-in-mcpe-master-game-hack In PDF document text
    • http://karldall.dk/images/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-hack-spins-apk_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/best-free-minecraft-server-hosting-reddit_GM479516143.pdfIn PDF document text
    • http://karldall.dk/images/how-to-hack-coin-master-spin-in-hindi_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/hack-coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-deals_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/freegames911com-coinmastertipsandcheats2021freecoinsandspins_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-free-spins-for-iphone_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/free-robux-live_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • http://karldall.dk/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://karldall.dk/images/free-robux-accounts_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://karldall.dk/images/robux-robux_GM431946152.pdfIn PDF document text
    • http://karldall.dk/images/coin-master-free-spins-and-free-coins_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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ba.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47BA 24296 bytes
SHA-256: c5953ce967c44f513e70b0a203a675a739fa5f6d1094720f4038109ad2e95660
font_01_sfnt_off00007e26.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E26 2824 bytes
SHA-256: 381f6d859be141449dd645f7be1484d2a1cf49218dc471b402dae69eaa2b11d5
font_02_sfnt_off000087c9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x87C9 18056 bytes
SHA-256: ea749421c9763e897f0775a2fca8a7e481d8ca205e309ab3fda826117ef8ab8f

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