Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f37e6a9ad99e675…

MALICIOUS

PDF

35.5 KB Created: 2021-06-29 05:02:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2c6084cd891551ab2c67e083a1704dce SHA-1: bb69008ce2f850e90b747dbbe97e0c7d17037a19 SHA-256: 4f37e6a9ad99e675bafafb2b95149727e7b7b2600a8b99b26f096a3c93c1fb15
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to external websites, masquerading as generators or hacks for popular games. One of the primary links, http://netcdn.co/app/431946152/roblox-greenwood-town-how-to-get-free-deathbringer-game-hack, is flagged as a malicious redirector. The document body and embedded URLs suggest a social engineering tactic to drive traffic to potentially malicious sites, likely for credential harvesting or malware distribution.

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/roblox-greenwood-town-how-to-get-free-deathbringer-game-hack In PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-hack-client-we-are-devs_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-how-to-get-any-gamepass-for-free-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/easy-ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-play-now-for-free_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-do-you-get-roebucks_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-tool_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-spins-for-coin-master-app_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-coin-master-glitches_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/roblox-sit-fly-hack_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/withdraw-robux_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-limited-time-game_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/get-free-robux-info_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/youtube-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/breaking-free-roblox-id_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/how-to-hack-money-tycoons-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/coin-master-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://digilib.ulm.ac.id/pusat/repository/free-robux-websites-that-actually-work_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_off00003287.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3287 22480 bytes
SHA-256: 00e48b029f0e88526c7fdc8c27c18db04eda1ffb373507935faef9bfdaef2532
font_01_sfnt_off0000646a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x646A 19548 bytes
SHA-256: 4acb2114442da76cdd325954334ae8ec481fe3dec17a3594038f1778db0d6bd3

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