Malicious PDF — malware analysis report

Static analysis result for SHA-256 3dd281ac5a0b9d8b…

MALICIOUS

PDF

44.9 KB Created: 2021-06-03 08:35:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-26
MD5: 1448c990a74e1c611228a8f2873062b8 SHA-1: c62855941ba607c5dd9ae36dd1997ac71bfccebe SHA-256: 3dd281ac5a0b9d8bca0fdc01763aa11e9b38c826dee348e370d9d2d41bcda08c
220 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/431946152/free-roblox-clothes-boy-game-hack In PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/robux-giver_GM431946152.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/coin-master-heaven-free-spins-today_GM406889139.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/free-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/pubg-600-uc-free-redeem-code_GM1330123889.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/hey-google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/minecraft-pe-hack-client_GM479516143.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/minecraft-free-minecoins_GM479516143.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/minecraft-java-edition-key-free_GM479516143.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/hack-coin-master-apk-download_GM406889139.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/free-robux-instantly_GM431946152.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/how-to-hack-someones-roblox-account_GM431946152.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/robux-prices_GM431946152.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://traveljogja.net/ckfinder/userfiles/files/free-spins-coin-master-generator_GM406889139.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_004_off000052ff.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x52FF 24932 bytes
SHA-256: ea8419bfc6ba4fbfcc3638bdc1e841120a703bb00fa33aa99ac28ce6759cf0a9
font_01_sfnt_off00008c77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C77 18400 bytes
SHA-256: ff0928d05cd2328f5f6db263fee94a7b5023d77c4cae175890f1311eb4a8d902

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