Malicious PDF — malware analysis report

Static analysis result for SHA-256 0bcdacdff5c45421…

MALICIOUS

PDF

33.8 KB Created: 2021-06-27 07:47:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 77bb138837bbd4f823a6866cb226ff2a SHA-1: 95f320938111d9d04928e7f6d444c1a32b4ee896 SHA-256: 0bcdacdff5c454217f217f3f14de5fca2060fdd777d87948b4543c949f10372b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a known malicious redirector infrastructure, specifically advertising 'robux hack generator' and 'game hack' lures. The document body and extracted URLs reinforce this theme, suggesting a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the PDF's structure and embedded links are indicative of a social engineering attack.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/robux-hack-generator-game-hack In PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/can-you-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/get-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-download-coin-master_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-hack-online-download_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/pokemon-go-accounts-free-list-2021_GM1094591345.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-do-you-install-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/freer-pro-tiktok_GM835599320.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/when-i-start-cheat-engine-roblox-shuts-down_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/megan-hack-roblox-executor_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/roblox-fashion-frenzy-games-free-online_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/rbx-points-get-free-robux_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-blogspot_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-face-roblox-2021_GM431946152.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
font_00_sfnt_off00002fcb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCB 21672 bytes
SHA-256: e9ba28f2009162d4f249ae0e81e58c7b933a1df506275d0875f92917f683ae4a
font_01_sfnt_off00005f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5F71 18824 bytes
SHA-256: 6a2f4fb47bcac7a1427eb84fb186ae35d3638566a93e34d85c8a35338f058712

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