Malicious PDF — malware analysis report

Static analysis result for SHA-256 aec130f4ce390e6a…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 00:34:27 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 04a32b329867834490e9946a5206f896 SHA-1: 5a483487e5e6fa84d7a9f9167fb45353fbafaf1a SHA-256: aec130f4ce390e6adf5261bd9aa9a487416f7380640fa35c75dd739bc5598a3c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, including a known malicious redirector. The document body and heuristics indicate a lure for game hacks or free items, designed to trick the user into clicking the malicious link. The primary link identified is https://netcdn.xyz/app/406889139/hack-coin-master-android-game-game-hack, which likely leads to a second-stage download or exploit.

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/hack-coin-master-android-game-game-hack In PDF document text
    • https://www.ak-oroslavje.hr/files/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-free-spins-today-39_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-daily-free-spins-link_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-that-actually-works_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/how-to-get-free-spins-and-coins-in-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-robux-app-real_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/legit-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-t-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-spins-on-coin-master-2021-ios_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/coin-master-hack-tool-access-online-generator_GM406889139.pdfIn PDF document text
    • https://www.ak-oroslavje.hr/files/free-minecraft-addons_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_off00004a61.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A61 24400 bytes
SHA-256: 137a76bb12545303b1293c76f77e65898b94115fd749a381afc7c714623b8f51
font_01_sfnt_off000081da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81DA 18152 bytes
SHA-256: d3c9aa7dfb916c30d642dc273c5fbfa403e201a1cc6ae80255d1887c8e000a07

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