Malicious PDF — malware analysis report

Static analysis result for SHA-256 8c58b25727719e94…

MALICIOUS

PDF

34.0 KB Created: 2021-06-29 04:29:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 709b01ac8325ec25828e6bfeb3466276 SHA-1: e4416ad9ac6e335abcdcef6e2414d53cb9da1fe6 SHA-256: 8c58b25727719e94acadfbca4a44e88e116eb55eead0959a3335a3d215b00533
160 Risk Score

Malware Insights

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

This PDF document employs a lure of game hacks and free currency to trick users into clicking malicious links. The primary link directs to a known malicious redirector infrastructure, likely serving as a gateway to further malicious content or exploits. The ML classifier strongly indicated maliciousness, and the PDF structure itself contains links designed to deceive users into downloading potentially harmful content.

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.co/app/431946152/counter-roblox-hacks-game-hack In PDF document text
    • https://digilib.stieama.ac.id/repository/free-rare-cards-for-coin-master-christmas_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-online_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/best-hack-script-pack-for-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-hack-pc_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-come_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-blue-aldias-tshirt-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-server-free-app_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/hack-para-coin-master-singapore_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-marketplace-sell-for-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-money-hack-tool_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/business-cat-roblox-free_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-can-you-get-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/fake-robux-codes_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/minecraft-free-download-android_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-robux-hack-code_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_off00002e43.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2E43 22428 bytes
SHA-256: 5514ebde2abaf5efd41b38823098e5719fd2d7e2b0a4face873cee50e0bcb154
font_01_sfnt_off00006004.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6004 18900 bytes
SHA-256: 8ac28724ad66c584bc8166dd851bfab85c23617610b7f071ecf77ae27b8902db

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