Malicious PDF — malware analysis report

Static analysis result for SHA-256 1e8ff9d0f10db7f9…

MALICIOUS

PDF

51.8 KB Created: 2021-05-16 19:56:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1ef65aaa3a0a73971caf909deb703ade SHA-1: 8efaeebc6b7c8c7900e4b18a6c698192024ec500 SHA-256: 1e8ff9d0f10db7f9ef6e2d1ce543eacebb37f8c85296867b9796b7947bb3ef2e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to redirector domains and known malicious infrastructure, disguised as a lure for free Robux or game hacks. The embedded content and heuristics indicate that this document is designed to trick users into visiting these malicious sites, which likely serve as a gateway for further malicious activity such as malware downloads or phishing. No scripts were extracted from this sample.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9348

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/431946152/free-robux-no-verification-2021-ios-game-hack In PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-free-download_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-minecraft-survival-server_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-jackpot-madness-hack_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-without-human-verification-real_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/roblox-bux-free_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/200-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/how-to-get-free-robux-without-offers_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/cool-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-robux-reddit_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/my-roblox-account-was-hacked_GM431946152.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/clean-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://nebraskahospitalityhalloffame.com/images/free-coin-and-spin-for-coin-master_GM406889139.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_off00004ad6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AD6 36648 bytes
SHA-256: cd0e605f382ca217509948c16d42252d50c0cec94488db88f5c64e6d22c44027
font_01_sfnt_off00009996.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9996 3884 bytes
SHA-256: 40b61f8938bd710dc29dc58ba3fde91c245a6a69596ec569b4d27c769ca417cf
font_02_sfnt_off0000a63d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA63D 19004 bytes
SHA-256: 57c461ba4099b7c3a729e07f809cac2bd0540fe115d61d2f21d5ca70446f19e8

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