Malicious PDF — malware analysis report

Static analysis result for SHA-256 3f7016f4a4b1fb92…

MALICIOUS

PDF

35.1 KB Created: 2021-06-25 07:00:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 24691d077d7a08f8a8a54e221d7822d6 SHA-1: d3b7078a647432e57440a65a8545359a1ddf4c9a SHA-256: 3f7016f4a4b1fb9262940e63fbe9a971e765b798b14f59319fda9a8af1b776c7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links, including one pointing to http://netcdn.co/app/431946152/how-to-get-free-dimonds-in-roblox-royle-high-shool-game-hack, which is identified as a malicious redirector. The document body and heuristics suggest a lure for game-related cheats or generators, likely intended to lead users to further malicious content or downloads. No scripts were extracted, but the embedded URLs and the nature of the lure indicate a phishing or scam attempt.

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 http://netcdn.co/app/431946152/how-to-get-free-dimonds-in-roblox-royle-high-shool-game-hack In PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-infinite-robux_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-tiktok-followers-2021_GM835599320.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/bux-land-free-robux_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-free-robux-without-verification_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/get-free-robux-no-survey-no-human-verification_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/roblox-builders-club-free-2021_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-roblox-gift-card-codes-2021-march_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/instagram-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-foxy-food_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/minecraft-mojang-free_GM479516143.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/como-hackear-coin-master-ios_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/roblox-avatar-ideas-free_GM431946152.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/coin-master-free-spins-app_GM406889139.pdfIn PDF document text
    • https://kupinapopust.mk/pub/img/userfiles/files/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 5

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
font_00_sfnt_off00003141.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3141 22076 bytes
SHA-256: f1268f3e9824917e2a675de10294fab15209a8bf8e4888eefd652e67e98949f2
font_01_sfnt_off00006199.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6199 19988 bytes
SHA-256: 21d0cb99da9cfd1d15d6ee1aab79acd7f579145721f5ece0e68a260ae5529a23

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