Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eb1b364e89274b8…

MALICIOUS

PDF

49.4 KB Created: 2021-06-10 23:58:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 7d6ac7dfbe3f84bbefbebf0d4b1ca367 SHA-1: 187348ca3c303339e980c44043a0c6e0bedd95eb SHA-256: 7eb1b364e89274b853c4abbf08adfa29529e096a0cf22e9c9955dc1c067f30d4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to websites offering game hacks and free items, a common lure for phishing or malware distribution. The ML classifier also flagged this PDF as malicious. The embedded URLs suggest an attempt to direct the user to potentially harmful content.

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/free-unicorn-shirt-roblox-game-hack In PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-get-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-free-gold-cards_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-robux-offers_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/hack-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/uprobuxcom-free-robux_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/minecraft-realms-free_GM479516143.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/freer-tiktok_GM835599320.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-free-spins-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/how-to-get-free-roblox-catalog-items_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-get-free-cards_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/gold-card-coin-master-free_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-free-shield-link_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/roblox-arsenal-hack-script-pastebin_GM431946152.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/coin-master-free-coins-and-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.riverkennet.org/uploads/files/files/stock-speed-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000050da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x50DA 28332 bytes
SHA-256: 99fa68ab73f9cca37618fbd77a24f4c17e36b0820a25c9bbc6896bca84c89713
font_01_sfnt_off00009108.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9108 5596 bytes
SHA-256: 9a13c2580265a78e8a7257496a31ee0055738af7e20a5661c2902efe4bf05ce5
font_02_sfnt_off00009daf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DAF 18524 bytes
SHA-256: 81f18543f135d843a2ad0f1fc6299c62e3ebf5170d3da7abad10d540e41ad31d

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