Malicious PDF — malware analysis report

Static analysis result for SHA-256 5354a1617d6e85ce…

MALICIOUS

PDF

45.7 KB Created: 2021-05-13 22:10:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a6738c9aabe17da6aa20676a0e01358e SHA-1: 69dddd361a0fe2dc5b35fee4be3d1254dcac93a2 SHA-256: 5354a1617d6e85ce52f0c271cff56d65d8ccdc172fbba2369bffa63991bf9eef
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free currency'. The primary lure is a link to 'como-hackear-coin-master-gratis-game-hack' on netcdn.xyz, which is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest a social engineering tactic to drive users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9507

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/como-hackear-coin-master-gratis-game-hack In PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-download-hack-ios_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/lazyblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-2021-app-download_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/how-to-get-free-skins-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-card-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/minecraft-windows-10-hacked-client_GM479516143.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/best-way-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/robux-apk_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-no-verification_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/free-robux-link_GM431946152.pdfIn PDF document text
    • http://www.elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkanigoro.sch.id/__statics/gudangsoal/files/how-to-hack-roblox-to-get-robux_GM431946152.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_off00004e23.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E23 25012 bytes
SHA-256: 7cd9d4f38a98af91315c83cb7a4d1f800bc121e13d8e7e3c2c78ef0a9ef44eb5
font_01_sfnt_off00008758.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8758 2820 bytes
SHA-256: 96a70491b0783ad8c6fc9b11a18f021aa22c69ac41ee4499b781d16a1b99b689
font_02_sfnt_off000090f8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90F8 17976 bytes
SHA-256: a3e9012f8e1f9d61ddd4f1d4d38951fb16594134e53f2a4a4cbd6e03026951a8

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