Malicious PDF — malware analysis report

Static analysis result for SHA-256 49197deaf281d643…

MALICIOUS

PDF

40.8 KB Created: 2021-05-15 05:44:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 67c1ed439bfb367664e1c9d94b610d9b SHA-1: 3c88bc58414315e9b731c886a0dda3d73d924bd0 SHA-256: 49197deaf281d643a12bcd07a5deebded08b4300948ed09b6cbff321d649fa67
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links designed to lure users into clicking on them, ultimately redirecting to malicious infrastructure. The primary lure is related to 'free spins and coins for Coin Master game' and 'game hacks', which is a common social engineering tactic. The ML classifier strongly indicated maliciousness, and the presence of numerous redirector links reinforces this assessment.

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/free-spins-and-coins-for-coin-master-game-game-hack In PDF document text
    • http://www.dcgsrl.it/images/how-to-legally-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/hack-coin-master-download_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-32-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-robux-roblox-promo-codes_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-change-your-roblox-username-for-free_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/today-free-spin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/claim-robux_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://www.dcgsrl.it/images/easy-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • http://www.dcgsrl.it/images/how-to-get-free-robux-on-computer_GM431946152.pdfIn PDF document text
    • http://www.dcgsrl.it/images/minecraft-apk-114-4_GM479516143.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_off00004666.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4666 23972 bytes
SHA-256: 89d6ff44ff9dadc7ca0ca9aaccec44f0809aa6a69b1c686bb95566d10e4a0a28
font_01_sfnt_off00007d1c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1C 18320 bytes
SHA-256: d1cf6b486e789d6a7a281824944966070be141b92be060b449a52bae7023ebff

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