Malicious PDF — malware analysis report

Static analysis result for SHA-256 18fedb62212d84e3…

MALICIOUS

PDF

41.8 KB Created: 2021-05-11 01:09:44 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 8c408565d9f9dbbe73f701822ef898f7 SHA-1: b41230f5861b7621868a56b94dcb4f20272e6386 SHA-256: 18fedb62212d84e364de412a5de0708df2ee23680dc99ff176ca61fda6ddcda3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting "free generators" and "game hacks" for popular games. The primary malicious link identified is https://netcdn.xyz/app/406889139/coin-master-free-spin-and-coins-links-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a phishing or social engineering attempt to direct users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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-spin-and-coins-links-game-hack In PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-free-spinv1-0apkpure-com-apk_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/robux-fun-hack_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-apk_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/minecraft-java-edition-download-free_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-hack-apk-july-29_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/coin-master-daily_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-free-robux-as-a-kid_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-free-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-earn-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/best-free-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://opac.salatigakota.go.id/slims7//repository/free-minecraft-windows-10-with-java_GM479516143.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_off00004840.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4840 25004 bytes
SHA-256: 15ecdd396e0f178d99ada19ece756e3feade53f24df49a202f9377435eae82e7
font_01_sfnt_off0000811a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x811A 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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