Malicious PDF — malware analysis report

Static analysis result for SHA-256 f829a386403aac96…

MALICIOUS

PDF

35.4 KB Created: 2021-07-04 19:47:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 18166ee5215b1327c54f3a830e355006 SHA-1: 0cd85475446912e93cf7a14903d1ac0ccceb03f1 SHA-256: f829a386403aac961ffcd1a6db7fd7f5756d7b6d85324d335a3083de5456bca2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded links that are identified as malicious redirectors, specifically targeting users with lures related to game hacks and free currency. The primary URL, http://netcdn.tw/app/406889139/como-hackear-coin-master-sin-verificacion-humana-game-hack, is a critical finding. While no scripts were explicitly extracted, the nature of the PDF and its embedded links suggests it is designed to exploit user interest in obtaining cheats or in-game currency, leading them to potentially malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/como-hackear-coin-master-sin-verificacion-humana-game-hack In PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/1m-stepford-county-railway-roblox-script-hacks_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-free-spins-generator_GM406889139.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-hack-apk-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-restaurant-tycoon-diamond-hack-script_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-hack-tool-pc_GM406889139.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/hack-for-mac-roblox_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-time-hack-2021_GM406889139.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/how-get-free-robux-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/pink-lobster-ru-5c20212021846-roblox-hack-pro-cheat-exe-32e22_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/free-coin-coin-master_GM406889139.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/coin-master-tricks_GM406889139.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/free-robux-com-2021_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/how-to-get-free-robux-on-safari_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-a_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/robux-free-com_GM431946152.pdfIn PDF document text
    • https://www.ashkarco.com/uploaded_files/userfiles/files/roblox-com-free-play_GM431946152.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
font_00_sfnt_off000033e7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x33E7 22856 bytes
SHA-256: be186516e14eda437f73b2ae7e5657b385b23c14e352a5accc522c7f89c2c3ae
font_01_sfnt_off00006724.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6724 18540 bytes
SHA-256: ca221532449295fc5a272912ffd6ce49f250f345c03bf27bdcddefe1932778a9

Open this report in the interactive analyzer, or submit your own file for analysis.