Malicious PDF — malware analysis report

Static analysis result for SHA-256 14149014b87e3b2e…

MALICIOUS

PDF

42.4 KB Created: 2021-05-17 15:31:49 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: af0bd8e67ddbb00d4432c4d0860bad3a SHA-1: b6255280d6392c30950267bdd7423426f3d16c42 SHA-256: 14149014b87e3b2e66b33190a2f7af145800446469b43afe51a026661dbc0dda
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'free generators' and 'game hacks'. The ML classifier strongly indicated maliciousness, and the presence of numerous redirector links confirms a malicious intent to lure users to potentially harmful sites. No scripts were extracted, but the document structure itself facilitates the malicious redirection.

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-spin-coin-master-2021-link-game-hack In PDF document text
    • http://archi-z.ru/images/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://archi-z.ru/images/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://archi-z.ru/images/coin-master-daily-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/how-to-download-minecraft-for-free-on-mac_GM479516143.pdfIn PDF document text
    • http://archi-z.ru/images/haktuts-2021-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://archi-z.ru/images/how-to-make-a-modded-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • http://archi-z.ru/images/free-minecraft-accounts-2021_GM479516143.pdfIn PDF document text
    • http://archi-z.ru/images/info-roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://archi-z.ru/images/microsoft-bing-robux_GM431946152.pdfIn PDF document text
    • http://archi-z.ru/images/master-coin-free-link_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/coin-master-free-daily-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/how-to-get-free-coins-and-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://archi-z.ru/images/where-to-get-robux_GM431946152.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_off00004ac0.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AC0 24308 bytes
SHA-256: 7a371b5be27a537d2f780b5e85aab05b7c7af1a2e0d8037f6ac2715551715d9e
font_01_sfnt_off00008295.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8295 18456 bytes
SHA-256: 7500aca679d0fadfbda1e17cf023a195ee80a601fef81e7f7ced8cf50182af56