Malicious PDF — malware analysis report

Static analysis result for SHA-256 827db45196340d88…

MALICIOUS

PDF

34.9 KB Created: 2021-07-03 14:07:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2a8c71ca40d564bd51f1bc5edd5b7d2c SHA-1: c89e084f52dd38932dbfdf50d969fd79a03fc6ed SHA-256: 827db45196340d885ceab17d75e4f330b5d63dd97435b77d0977c1fb1ffdd77f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external redirectors, masquerading as game hacks and cheats. The primary lure is a download button, directing users to potentially malicious infrastructure. The embedded URLs and the document's structure strongly suggest a phishing or scam attempt aimed at tricking users into downloading unwanted software or visiting 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/download-hack-coin-master-game-hack In PDF document text
    • http://lib.mappifhui.org/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-no-human-verification-survey_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-1m-robux-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-admin-exploiting-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-roblox-card-codes_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/minecraft-ps3-free-download_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/get-free-robux-by-pay-out-after-offre_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/vehicle-tycoon-roblox-hacks_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/hack-shrek-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/can-you-still-get-minecraft-windows-10-for-free_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-roblox-noob_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-lumber-tycoon-2-cheater-box_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-cards-codes-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-do-u-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/final-stand-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/who-to-hack-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-play-heroes-online-roblox-for-free_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
stream_002_off00002f91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F91 23384 bytes
SHA-256: a517303816e7eeb3faca3e2234c66b5a19ec78d9e79f39d84913523f3aeede56
font_01_sfnt_off000064a3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64A3 18584 bytes
SHA-256: 1c1203a1d4a887c175dab2b1e0fbad6499f2d3e5611c1b83f9ce1eb446d2c3ab

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