Malicious PDF — malware analysis report

Static analysis result for SHA-256 6844c9c3eaff96e9…

MALICIOUS

PDF

33.5 KB Created: 2021-07-02 07:22:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a68461fa4ae5139cb5dd72160f263d71 SHA-1: e0daebc8de260815d65b599357267893d6fdfa10 SHA-256: 6844c9c3eaff96e9df3538d8ea02ca1dbc85a4f254156395d3f5273f249e254a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector, disguised as 'free generators' or 'game hacks' for popular games like Roblox. The document body and embedded URLs strongly suggest a social engineering lure to trick users into visiting malicious sites, likely for credential harvesting or further malware delivery. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

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/bloxorz-free-robux-game-hack In PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-how-to-cheat-on-obstacle-paradise_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-spin-and-coins-links-2021_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-spins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/get-the-free-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-be-a-wannabe-hacker-on-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/cheat-arsenal-roblox_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-how-to-cheat-on-tycoon-games_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-cheat-exploit-juillet-2021-for-vehicule-simulator_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/pokemon-go-free-yellow-team_GM1094591345.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-roblox-accounts-2021-september_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-add-badges-to-youre-game-roblox-free_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/free-robux-games_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/earn-5-robux-free_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • https://tanahlot.id/assets/CKImages/files/60-free-spins-coin-master_GM406889139.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_off00002ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FFC 21268 bytes
SHA-256: e041363c6a2983fed9728853fd6f0be47e5118c972ec174bcbbd6db8e5452e34
font_01_sfnt_off00005e6b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E6B 18872 bytes
SHA-256: e1cc449b1dfd04e10a5857be2d124a0f7147d321096a7bfbf2fb301cc07d8a04

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