Malicious PDF — malware analysis report

Static analysis result for SHA-256 c2f345b80348e021…

MALICIOUS

PDF

44.2 KB Created: 2021-05-13 21:47:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: aa93ac4c6cd09eb12a7470d30fcd9cd2 SHA-1: 7d3a62164dccd3bc03b849aba5dc34833921a382 SHA-256: c2f345b80348e021d9c3e77e7efcdd3ec5f578d78f0da8927b21d62df82f1970
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded URLs and a call-to-action phrase, strongly suggesting a lure for users to download potentially malicious content. The ML classifier also flagged this PDF as malicious with high confidence. The presence of game-related lures indicates a social engineering tactic to trick users into clicking malicious links.

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 https://netcdn.xyz/app/406889139/coin-master-free-spins-2021-hack-game-hack In PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/hacker-minecraft-song_GM479516143.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/coin-master-hack-tool-v1-9-download-free_GM406889139.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/easy-way-to-get-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/how-to-get-free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/minecraft-pe-free-download-android_GM479516143.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/get-free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/coinmaster-rewards_GM406889139.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/coin-master-promo-code-2021_GM406889139.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/games-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/robux-free-com_GM431946152.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/how-to-get-roblox-premium-for-free_GM431946152.pdfIn PDF document text
    • http://elearning.man1sintang.sch.id/__statics/gudangsoal/files/prison-life-roblox-hacks_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_003_off00004d1b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D1B 26040 bytes
SHA-256: 93d5f5f57b82f92d9db481fac63de302bf604978262fcd0d20f188c14c27e139
font_01_sfnt_off00008a0e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A0E 18456 bytes
SHA-256: 01aac8443e047fcb7357b1b8ecb4a3fbe01c6e1da05f82155595583d2ef12cbf

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