Malicious PDF — malware analysis report

Static analysis result for SHA-256 6425ee8a783bdebf…

MALICIOUS

PDF

34.0 KB Created: 2021-06-20 06:55:53 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ccd88daa4d8930273c2ca37bb1eace9b SHA-1: afa956b7a84b1a4fa771ce19ea8229494f215ae0 SHA-256: 6425ee8a783bdebf7a8a8afec97e1344ab2734411488bafabca3fe7bc18ce854
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links, including one to 'netcdn.co', which is flagged as a malicious redirector. The document body and heuristics indicate a lure for 'game hacks' or 'free generators', suggesting a phishing or malware distribution attempt. Although no scripts were explicitly extracted, the nature of the links and the ML classifier's high confidence point towards a malicious intent to redirect users to harmful content.

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/good-hacks-for-roblox-game-hack In PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-hack-minecraft_GM479516143.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/download-roblox-on-pc-for-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-fun-hack-online_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-dominus-free_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-to-hack-people-on-roblox_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-accounts-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/robux-xyz_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-c00lkidd-hack_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-hack-com_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-often-tiktok-free-download_GM835599320.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/hacking-my-boyfriends-roblox-account_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/free-robux-hack-pastebin_GM431946152.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/coinmaster-spin-ml_GM406889139.pdfIn PDF document text
    • http://digilib-pps.unja.ac.id/repository/roblox-dragon-ball-rage-cheats_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
stream_002_off00002e5c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E5C 22304 bytes
SHA-256: bf02efd2b4dd821b107302b7a4ef1b4c7bb672440b58d777f623626e859fccc9
font_01_sfnt_off00005fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDC 18996 bytes
SHA-256: e39a901859a5c230b67b532cd6429a47e39043117a0fcb6181230b61d34643f3

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