Malicious PDF — malware analysis report

Static analysis result for SHA-256 834ae04285eccae1…

MALICIOUS

PDF

48.5 KB Created: 2021-06-08 19:05:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: f8d3ba2e62c9ac60cffcefc3f81abe4a SHA-1: 74a24347a2dd89c798b556841a12ded220f6b791 SHA-256: 834ae04285eccae1b4ebfce72ef6f8c08288a6be651c88b233c11824da28eb48
160 Risk Score

Malware Insights

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

The PDF contains a critical heuristic firing for a game hack lure, linking to a known malicious redirector. The embedded URL and document body text both point to this lure, aiming to trick users into clicking the link. While no scripts were extracted, the PDF structure and embedded link strongly suggest an attempt to redirect the user to a malicious site, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9796

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.tw/app/431946152/hack-roblox-lumber-tycoon-2-game-hack In PDF document text
    • http://www.meslekpatent.com/images/coin-master-free-spins-and-coins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.meslekpatent.com/images/free-robux-no-gift-card_GM431946152.pdfIn PDF document text
    • http://www.meslekpatent.com/images/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • http://www.meslekpatent.com/images/free-minecraft-client_GM479516143.pdfIn PDF document text
    • http://www.meslekpatent.com/images/free-views-tiktok_GM835599320.pdfIn PDF document text
    • http://www.meslekpatent.com/images/free-daily-spin-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.meslekpatent.com/images/free-tiktok-followers-instantly_GM835599320.pdfIn PDF document text
    • http://www.meslekpatent.com/images/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://www.meslekpatent.com/images/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.meslekpatent.com/images/coin-master-hack-mod-apk-download_GM406889139.pdfIn PDF document text
    • http://www.meslekpatent.com/images/how-to-hack-roblox-for-robux_GM431946152.pdfIn PDF document text
    • http://www.meslekpatent.com/images/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • http://www.meslekpatent.com/images/theme-park-tycoon-2-free-download-roblox_GM431946152.pdfIn PDF document text
    • http://www.meslekpatent.com/images/coin-master-free-spin-2912-2021_GM406889139.pdfIn PDF document text
    • http://www.meslekpatent.com/images/free-tiktok-likes-app_GM835599320.pdfIn PDF document text
    • http://www.meslekpatent.com/images/minecraft-build-hacks_GM479516143.pdfIn PDF document text
    • http://www.meslekpatent.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://www.meslekpatent.com/images/how-to-make-a-custom-rthro-for-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.meslekpatent.com/images/minecraft-pvp-hacks_GM479516143.pdfIn PDF document text
    • http://www.meslekpatent.com/images/how-to-hack-peoples-roblox-accounts_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_004_off00004e6c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E6C 28124 bytes
SHA-256: cd4f9d655209f2a690703fe2a899720c6841aa8a4c7ad1533a6255afcec3d901
font_01_sfnt_off00008f16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F16 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off000098c8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C8 18888 bytes
SHA-256: bb9210fbad37ed61467bae22278dd8fd7dba1ae15f5609d9fe630c037aee2a20

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