Malicious PDF — malware analysis report

Static analysis result for SHA-256 f1f5a85650fc41c8…

MALICIOUS

PDF

34.7 KB Created: 2021-07-04 00:11:07 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d2aa6ea978d9589dbfc8ee071d69d246 SHA-1: 29ff30cb0b86d7dcec6a8f2402ce310be7d97604 SHA-256: f1f5a85650fc41c80eda57ac2bec64624f8546929ae4670c5994b1aaddb43550
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The primary lure is for 'Coin Master Free Spins', directing users to a URL that likely serves as a gateway to further malicious content or scams. No scripts were extracted, but the document's structure and embedded URLs strongly suggest a social engineering attack.

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.tw/app/406889139/coin-master-free-spins-facebook-game-hack In PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/moonactive-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/how-do-u-get-roblocks-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/coin-master-hack-download-apk_GM406889139.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/cool-free-roblox-hats_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/coin-master-free-download_GM406889139.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/mac-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/free-robux-coes_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/hack-any-tycoon-roblox-win10_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/how-to-get-unlimited-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/epic-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/hack-de-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/cheat-engine-67-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/coin-master-viking-quest-hack_GM406889139.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/obc-hack-roblox_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/coin-master-free-spins-link-no-verification-code_GM406889139.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/daily-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/coin-master-hack-review_GM406889139.pdfIn PDF document text
    • http://perpus-untagsby.web.id/library-untagsby.web.id/repository/hack-for-roblox-bee-swan_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 1

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_off000030b6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30B6 23056 bytes
SHA-256: ffe643e8577bf8f5ed106b4f51d0e6525e26eba768d8ec7f90dae2469d07b5d5
font_01_sfnt_off0000644c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x644C 18504 bytes
SHA-256: 60d2bdc76bcd03856ff56843c76a1045165bedbcd3c7078909a454fabf5c0968

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