Malicious PDF — malware analysis report

Static analysis result for SHA-256 c82d2de672838259…

MALICIOUS

PDF

45.6 KB Created: 2021-05-12 16:39:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: b7edfd807ddf02738244e763a8ebb453 SHA-1: bbb10998efa4da767f2133b63e9ec587524d2234 SHA-256: c82d2de672838259cbd1b5c512bf9e403d04ddfe124ce0d22ed47d56e07f0104
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF document contains multiple embedded URLs and a primary external URI pointing to a domain associated with game hacks and cheats. The ML classifier also flagged this PDF as malicious. The presence of these links suggests an attempt to direct users to download potentially unwanted or malicious software, disguised as game enhancements.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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-rewards-game-hack In PDF document text
    • http://arkivthy.dk/images/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-cheats-free-spins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-400-spins-coins-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hack-app-link_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-spins-for-coin-masters_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-free-download-mac-full-version-2021_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-pe-hacked-client-download_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-hack-2021-android_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-fan-page-free-spins_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-modded-client_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/free-spins-and-coins-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-fire_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004caa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4CAA 26108 bytes
SHA-256: 0f0d67f3e1f081e1f002d4a9a483671770b5863fc5db69800587c83ac3484088
font_01_sfnt_off00008748.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8748 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off000090e9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90E9 17884 bytes
SHA-256: acbd2960432ed6aaee9cffad063da1b3d43b5b4e200ce15de4e80cb136e5b59b

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