Malicious PDF — malware analysis report

Static analysis result for SHA-256 48404e6a70a6f7c1…

MALICIOUS

PDF

36.3 KB Created: 2021-05-23 03:19:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 5b69f0c72af5b7cdff20fba6d595b34d SHA-1: 339879a4141cce685a1a39b4d16af0b29a0c5b61 SHA-256: 48404e6a70a6f7c11a598c6c59dae6878441df87175c1749eda3c69d45c8f7f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, disguised as offers for game hacks and currency. The document body and heuristics indicate a lure for free game items, directing users to the malicious URL https://netcdn.xyz/app/406889139/free-spins-and-coins-for-coin-master-game-hack. This suggests the file is intended to lead users to potentially harmful content or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9492

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/free-spins-and-coins-for-coin-master-game-hack In PDF document text
    • https://www.ruchya.com.tw/upload/files/windows-10-minecraft-free-with-java_GM479516143.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-online-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/robux-offers_GM431946152.pdfIn PDF document text
    • https://www.ruchya.com.tw/upload/files/free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000335b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335B 25828 bytes
SHA-256: 6192842ff58a251ac4c050de41fd3f41f3c5638a16e6e458b366987798cdf0ce
font_01_sfnt_off00006d6f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D6F 18060 bytes
SHA-256: d4954d2d00bde9f6a1061857a61d2c62c1ae360f44744af150ee923481526d51

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