Malicious PDF — malware analysis report

Static analysis result for SHA-256 45156ddb6c6f7c90…

MALICIOUS

PDF

46.0 KB Created: 2021-05-16 00:41:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 32aabcf54cb604d35e7599930e2c817d SHA-1: 611d4da8a291c26ba66c4ea66419848255204b9f SHA-256: 45156ddb6c6f7c90b9dfd5b469e6e0e874a1a870285f6b3b8070fc2fafa0ae0b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free in-game currency. The primary malicious URL identified is https://netcdn.xyz/app/406889139/coin-master-hack-progamers-game-hack, which is associated with a game hack generator lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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-hack-progamers-game-hack In PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/roblox-robux-page_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-robux-ad_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-free-box_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/roblox-free-robux_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-free-spins-daily-2021_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/i-want-free-robux_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-robux-safe_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-minecraft-skin-maker_GM479516143.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/how-do-you-earn-robux_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/minecraft-hack-2021_GM479516143.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/how-to-really-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-hack-version-2021-free-download_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/rewardrobux-com_GM431946152.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/spin-rewards-coin-master_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/wwwhaktutsin-2021-08-coinmasterfreespinandcoinlinkhtml-m-1_GM406889139.pdfIn PDF document text
    • https://learn.mtsntaput.sch.id/__statics/gudangsoal/files/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b97.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B97 24628 bytes
SHA-256: 9ff18bab8ff96c676f6ac950a80f79b2606fdbef3fb009c20b360cef44d772e8
font_01_sfnt_off00008445.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8445 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off000090ca.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x90CA 18416 bytes
SHA-256: 9b1b86d518bbcbecce2ac7037f2b10fa6fa9b3d2e28cf0c2cd03817ae8459785

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