Malicious PDF — malware analysis report

Static analysis result for SHA-256 f2c6436a9cf3c49b…

MALICIOUS

PDF

47.4 KB Created: 2021-05-13 10:31:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 314444b4a3101653ad8fe6f9098aeeaf SHA-1: 4292766391f73093d0863691fef1b239319f2e40 SHA-256: f2c6436a9cf3c49b742628c374ebf4c1c872348c4a00698ca86c6e3130b76ae2
160 Risk Score

Malware Insights

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

This PDF document employs a common lure of offering a "Coin Master Hack" to entice users to click on malicious links. The document contains multiple embedded URLs, including a primary redirector at `https://netcdn.xyz/app/406889139/coin-master-hack-pc-download-game-hack`, which is flagged as malicious. The presence of a visual download button further supports the social engineering aspect of this attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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-hack-pc-download-game-hack In PDF document text
    • https://www.gornjastubica.hr/files/coin-master-hack-progamers_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/collect-free-spin-linms-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-to-make-clothes-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-hack-tool-apk-download_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/claim-robux_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://gornjastubica.hr/files/how-do-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/windows-10-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/how-to-hack-coin-master-root_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/free-script-executor-roblox_GM431946152.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://www.gornjastubica.hr/files/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://gornjastubica.hr/files/hack-coin-master-ios_GM406889139.pdfIn 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_off00004c47.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C47 27856 bytes
SHA-256: 269b7e6e7351d26fff698bd9b1d5867fc1bd72cd909c01632dd675efebc4e512
font_01_sfnt_off00008c81.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C81 2872 bytes
SHA-256: ddcc3a5e7a6aa1de358cfa90ca854c2543f9d5fa5646cb34984d2fb90089b4d9
font_02_sfnt_off00009668.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9668 18448 bytes
SHA-256: 1a77b19ae755b2674c1484136c2a6f206883130a3eb8aa78e1aa84be95f9bf15

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