Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2d9b211858b0dcf…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 22:26:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: daa0a3db9fd7ab37d66da9681aa54a09 SHA-1: c7b7dfc6cac18a61f4e92de48798d08e98733ad1 SHA-256: c2d9b211858b0dcf56ce2863e7568abfa00745316eb27d2c4e5be8371720722d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The document body and embedded URLs strongly suggest a social engineering lure to drive traffic to potentially malicious sites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

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.tw/app/431946152/oprewards-com-robux-game-hack In PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-hack-the-hood-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/can-i-use-free-models-on-my-roblox-game_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-pc-hack-tool_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/mcpe-free-download_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-get-free-outfits-on-roblox_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/robux-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-change-your-roblox-username-free_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-jailbreak-hacks-for-mac_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/wurst-client-download_GM479516143.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/coin-master-32-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://poltekkesbanten.ac.id/e-lib/repository/roblox-dinosaur-simulator-hack-script_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_off00003091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3091 22176 bytes
SHA-256: 552b80caddef3bf2f83b1c28880c8c86d02b071f0d7ccb7f60673aed48ee6347
font_01_sfnt_off000061d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61D2 19324 bytes
SHA-256: 35589dba4e7bbe14e1ea02444a76fb8b1cb592c0f5e8a7b1a407e52a29e90510

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