Malicious PDF — malware analysis report

Static analysis result for SHA-256 e12aa6509a3259f3…

MALICIOUS

PDF

36.0 KB Created: 2021-06-18 06:38:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 458ec6d57562f53ae025c22ce95c01be SHA-1: dcabc4c47c953c86be144699e13c9c135f551202 SHA-256: e12aa6509a3259f37e8e69143fcd6e7e160f5ed930ddbd3952eaf5a922dc1520
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript T1203 Exploitation for Client Execution

This PDF document contains multiple links to websites offering free in-game items, such as Robux or Coin Master spins, which are common lures for malicious activity. The heuristic PDF_MALICIOUS_REDIRECTOR_LINK specifically flags the primary URL as belonging to known malicious redirector infrastructure. The document body and embedded links suggest a social engineering tactic to drive users to potentially harmful sites.

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/ways-to-get-free-robux-2021-game-hack In PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/coin-master-free-2021-spin-link_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-spin-coin-master-twitter_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-spin-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-robux-obby-game_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/coin-master-400-spin-link-today_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-robux-no-downloading-apps_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/pokemon-go-free-like-games_GM1094591345.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/orewards-com-free-robux_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-robux-place_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/roblox-jailbreak-hack-download_GM431946152.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/daily-coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/how-to-play-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/freespinandcoinblogspotcom-2021-11-coinmasterfreespinandcoinlinkshtml_GM406889139.pdfIn PDF document text
    • http://e.mandacianjur.sch.id/__statics/gudangsoal/files/free-robux-ad_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_off00003382.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3382 22480 bytes
SHA-256: 6afe6b2969e5a4ce504eadf726413b4491edf6b5eb989ab6138064aa5abaf20e
font_01_sfnt_off000065c1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C1 19600 bytes
SHA-256: c00d54827bcee88cdbe96b013b7ed3ba2b531ed1e4e5548e429b871c3375097c

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