Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a8bc1473e65e73b…

MALICIOUS

PDF

44.9 KB Created: 2021-05-13 04:02:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ef7952b1ba742c98eaf0c7df351fef9c SHA-1: c91f81d44b57d1767688ac3a2ff0f4b20190c6bd SHA-256: 3a8bc1473e65e73b0a8e5b6aff8b1e4225bf713dec3e09966399d9091d89219b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious link disguised as a game hack generator, designed to lure users into downloading a payload. The embedded URL, https://netcdn.xyz/app/431946152/how-to-get-free-roebucks-game-hack, is flagged as a known malicious redirector. The document's structure and content strongly suggest a phishing or social engineering attack aimed at tricking users into executing further malicious content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/how-to-get-free-roebucks-game-hack In PDF document text
    • https://cfla.gov.lv/userfiles/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/hack-xp-net-generators-coin-master_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-to-hack-peoples-roblox-accounts_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/rbx-land-free-robux_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-2021-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/kachifpro_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-robux-websites-that-actually-work_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-free-coins-and-spins-hack_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/free-roblox-script-executor_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/can-you-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/get-free-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/how-to-get-roblox-premium-for-free-2021_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://cfla.gov.lv/userfiles/files/minecraft-survival-hacks_GM479516143.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_off000047a7.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47A7 30192 bytes
SHA-256: 68a051c2958f16882bd59164b834ba7658063f1699a1331e2e73064dadace714
font_01_sfnt_off00008d96.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D96 18240 bytes
SHA-256: fb0888cab3cba8d8abe3480d03057911a1e3623fba0647a42738b9adccb4e31a

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