Malicious PDF — malware analysis report

Static analysis result for SHA-256 fae0c82750cd638b…

MALICIOUS

PDF

41.0 KB Created: 2021-05-12 14:11:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cf1922b38ff08b335d37d88636646c28 SHA-1: d8493c67ce89d427e9a4fafa3db1ed121cb6547d SHA-256: fae0c82750cd638bf08f9b651f22f00aa907ff51d3998b444ab134c4d2e3928c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple embedded URLs that redirect to malicious infrastructure, specifically promoting a "Coin Master" game hack. The heuristic firings indicate this is a known malicious redirector pattern. While no scripts were explicitly extracted, the nature of the embedded links and the lure suggest an attempt to drive users to a compromised site, likely for further exploitation or malware delivery.

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/coin-master-100-spin-game-hack In PDF document text
    • http://arkivthy.dk/images/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/master-coin-free-spin-daily_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-level-4_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-villages_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-coins-today_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/twitter-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-no-offers_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/are-robux-generators-safe_GM431946152.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/free-robux-pins_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/300-daily-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-linux-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-game-plus-com-coin-master_GM406889139.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_off00004637.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4637 24776 bytes
SHA-256: 696b32cf6a4e7b17bb5360cb22140b04c80e3ed3cc4df31c6bda19bcdc41ffc9
font_01_sfnt_off00007e6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E6C 18000 bytes
SHA-256: 01f803363f7eeb4dce0f816621254ac49837589185e144589db73f807fad6798

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