Malicious PDF — malware analysis report

Static analysis result for SHA-256 2a459e641c7ed12a…

MALICIOUS

PDF

45.0 KB Created: 2021-05-11 16:43:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 824cafd6738a8fa5bb59c47fe1d7ef3e SHA-1: 0e719363af866258cc66128a1887f31c56314488 SHA-256: 2a459e641c7ed12a7c109d6c7f1ed657c42ed40258cea6ad006c2e649ab02174
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains numerous URLs pointing to sites offering game-related cheats and generators, suggesting a lure for users seeking in-game advantages. The ML classifier strongly flagged this PDF as malicious, and the presence of embedded URLs reinforces the suspicion of a phishing or malware distribution attempt. No scripts were extracted, but the overall pattern indicates a social engineering tactic to drive downloads.

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/roblox-promo-codes-generator-no-human-verification-game-hack In PDF document text
    • http://arkivthy.dk/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-spins-coin-master-2021-today_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/app-for-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/are-robux-generators-safe_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-chip_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/is-minecraft-free-on-xbox-one_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-game-plus-com-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-pc-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-link-download-hack_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-download-minecraft-windows-10-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.nrzroblox.comIn 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_off000049e2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49E2 28652 bytes
SHA-256: ff5e74d3910dcbc1b56c627d6ff7514a12e383b13afa345774bd1665523f32fb
font_01_sfnt_off00008b21.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B21 19100 bytes
SHA-256: da1745847f0d76ea82434fee3d569844ba056c0d901119001214af0940d395e7

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