Malicious PDF — malware analysis report

Static analysis result for SHA-256 5def0df6b966561e…

MALICIOUS

PDF

43.5 KB Created: 2021-05-13 16:00:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 854e7e49ff3d6ff0532465675a902d0b SHA-1: 913e59e2b7bfeaf935143914c1a92f58b9a6dcb5 SHA-256: 5def0df6b966561e8cbdc4e56ef5dc6910adf2e09c24f152f538485789236575
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs and a visual call-to-action, strongly suggesting a phishing or malware distribution attempt. The ML classifier also flagged this PDF as malicious with high confidence. The primary lure appears to be related to 'Coin Master free spins', a common social engineering tactic to entice users to click malicious links.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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-cheat-game-hack In PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/free-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/how-to-get-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/coin-master-hack-without-downloading-apps_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/free-robux-mobile_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/how-to-hack-someones-roblox-account-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/easy-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/clean-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/minecraft-pe-hack-client-ios_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/earn-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/robux-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/roblox-com-games-referrer-roblox-player_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/100-free-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/how-to-get-creative-mode-in-minecraft-server-hack_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnmodelpalopo.sch.id/__statics/gudangsoal/files/moonactive-coin-master-free-spins-link_GM406889139.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_off00004d59.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D59 25672 bytes
SHA-256: f0ed8d1d0b5de485b879a32fef3f92e56f132c8acc8e9d1d8cfa1fde0647e04b
font_01_sfnt_off000088b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x88B3 18052 bytes
SHA-256: 9bd717b0e04310867829ca511b483eebbd60050a5b8b31305794fbcb17f8519e

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