Malicious PDF — malware analysis report

Static analysis result for SHA-256 4c2586e912907bab…

MALICIOUS

PDF

41.4 KB Created: 2021-05-19 09:33:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: cf71a215058f63b1641c7e5fe38a099b SHA-1: 632606421045449febef494f29ac90720abbb767 SHA-256: 4c2586e912907babf2f1df2bd8281b7ba813f1a3b2d23493c154e2bc90d9028d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as game hacks and generators. The primary lure, 'how-do-i-get-free-coins-in-coin-master-game-hack', redirects to infrastructure associated with malicious activity. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering attack aimed at driving traffic to potentially harmful sites.

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/how-do-i-get-free-coins-in-coin-master-game-hack In PDF document text
    • https://dirigentigiustizia.it/images/free-executor-roblox_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/get-free-robux-info_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/hacking-apps-for-roblox_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-daily-gift-free-spins-and-coins-link-today_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/how-to-get-free-pokemon-go-accounts_GM1094591345.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-limiteds-roblox_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-spins-on-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/robux-no-verification_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/optifine-pe_GM479516143.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://dirigentigiustizia.it/images/coin-master-daily-free-spins-and-coins_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_off00004a08.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A08 23868 bytes
SHA-256: b877bf9f69d77af1572557e5c51dedbf1b201d6d5510c45388aee7b5fa910809
font_01_sfnt_off00008043.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8043 18044 bytes
SHA-256: a7eb4611cc5e19625cbf9eb325c611c19de71162a0200f7ffd184f09f4ce8017

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