Malicious PDF — malware analysis report

Static analysis result for SHA-256 de3b8e4efc9d65aa…

MALICIOUS

PDF

40.6 KB Created: 2021-05-17 11:35:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1334d63be3d5b11ce092ab3774f8e3d9 SHA-1: 150cccb2052955ac770210436a8b35ee7926d3cc SHA-256: de3b8e4efc9d65aab6a76bed46a0d760648fc0d3c7a9d934f24ac79f7152613d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded links designed to lure users with promises of free game currency and hacks. The primary link redirects to a known malicious infrastructure, indicating a phishing or scam attempt. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to redirect users to potentially malicious content or downloads.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/cm-free-spins-and-coins-game-hack In PDF document text
    • http://bwharrisalumniusa.org/images/easy-roblox-today_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/minecraft-aimbot_GM479516143.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/robux-app_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/minecraft-noob-vs-pro-vs-hacker_GM479516143.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/coin-master-free-download-pc_GM406889139.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/coin-master-free-spins-link-download-apk_GM406889139.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/roblox-sued_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/roblox-redeem-codes-free_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/roblox-free-robux-website_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/roblox-free-items-glitch_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/coin-master-free-spins-and-coins-without-human-verification_GM406889139.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/avatar-de-roblox_GM431946152.pdfIn PDF document text
    • http://bwharrisalumniusa.org/images/minecraft-book-collection_GM479516143.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_003_off00004767.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4767 23900 bytes
SHA-256: 7f8118a8eeab8fdae9e8a5f76c3b73b96636e30029b2031681c3d860414e93f7
font_01_sfnt_off00007d71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D71 17988 bytes
SHA-256: 6c27acc7e1a27f4dd98d9cdf7a00649578deada87f4d5bf77ad692372392325d

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