Malicious PDF — malware analysis report

Static analysis result for SHA-256 dc0621700d99c035…

MALICIOUS

PDF

41.5 KB Created: 2021-05-12 10:37:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5f318f1c5e8aafdedcb604b7c3f21603 SHA-1: aa97b3c443fb20059f052f277b6d9ca14f45a0b3 SHA-256: dc0621700d99c035ea441d77b84090958b5e9a0d43554017785d1c3a70a23412
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to a website offering game hacks and cheats, disguised as a download. The heuristic firings indicate that the PDF links to known malicious redirector infrastructure and is likely a lure for free game generators. The ML classifier also flagged this PDF with high confidence. No scripts were extracted from this sample.

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-cards-free-cards-game-hack In PDF document text
    • http://arkivthy.dk/images/are-robux-generators-safe_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/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/minecraft-reach-hack_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/hack-client_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/free-coin-master-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/apps-to-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-free-spins-coins_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/coin-master-apk-hack-3527_GM406889139.pdfIn PDF document text
    • http://arkivthy.dk/images/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://arkivthy.dk/images/can-you-really-hack-coin-master-ios_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_off00004702.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4702 25136 bytes
SHA-256: 727c9db735aea601f4a8d676e6396216d1a00c6c96b7acfe6c456986b0574f71
font_01_sfnt_off00008133.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8133 17884 bytes
SHA-256: d54aa51eaaaa3e2864f0114713409e316145a0183ee6aba9be1e443db1dceb19

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