Malicious PDF — malware analysis report

Static analysis result for SHA-256 13e5f4cb6ad4c6ea…

MALICIOUS

PDF

48.5 KB Created: 2021-06-03 04:15:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 51b68446363b328ca45c188d814d7c20 SHA-1: 64c08a9443e07d53fdbfb432407f752c0da16583 SHA-256: 13e5f4cb6ad4c6ea72bd3c1ee96225d8f9d81cc053f4a138a89e7378a49ac2bf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors, disguised as 'free generator' or 'game hack' lures. The primary malicious link identified is https://netcdn.online/app/479516143/can-i-play-minecraft-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to lead the user to a phishing or malware download site.

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.online/app/479516143/can-i-play-minecraft-for-free-game-hack In PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/freerobux-co_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-robux-without-survey_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coin-master-hack-iphone_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coin-master-free-spins-ios-2021_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-spins-and-coins-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/can-you-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/roblox-free-robux-hack_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/free-robux-hack_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/is-minecraft-education-edition-free_GM479516143.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/www-free-robux_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/get-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coin-master-free-generator_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coin-master-free-spins-link-download-today_GM406889139.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://satuoblong.com/ckfinder/userfiles/files/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • https://freegiftcodes.euIn 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_off000050de.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x50DE 29752 bytes
SHA-256: 7e40d9d3d9b360fb614ea3692e67e31dbb8895aa84bcd09ebce54c7c3acb6070
font_01_sfnt_off000091f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x91F9 2840 bytes
SHA-256: 787e0768241fb57660bcc9c7f726cf687277c463cdf8c586c4782ee9d03c3606
font_02_sfnt_off00009bb7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9BB7 18116 bytes
SHA-256: db9fb042e323340e2a38fe4918690f75e213c2b358d2fbab9da01db426307a9f

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