Malicious PDF — malware analysis report

Static analysis result for SHA-256 660287d71e7cdb75…

MALICIOUS

PDF

39.1 KB Created: 2021-05-24 06:42:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3697019ac92d36c78f20fdf91d9c1194 SHA-1: d59148b32a2f4923d1de77f9ae61f63637791935 SHA-256: 660287d71e7cdb75e505af5f20eab06b18cc868748903a6929f4b1a4fb5cf6a4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF contains multiple links to redirector domains, specifically advertising 'free generators' and 'game hacks' for popular games like Coin Master and Roblox. The primary redirector URL is https://netcdn.xyz/app/406889139/coin-master-free-spins-link-today-new-game-hack, which is flagged as malicious. The document body also contains calls to action and additional URLs pointing to potentially malicious PDF files hosted on familymn.com, suggesting a lure to download further malware.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8060

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-link-today-new-game-hack In PDF document text
    • http://familymn.com/images/robux-best_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/minecraft-pe-free-download_GM479516143.pdfIn PDF document text
    • http://familymn.com/images/how-to-get-hacks-on-roblox_GM431946152.pdfIn PDF document text
    • http://familymn.com/images/daily-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://familymn.com/images/coin-master-hack-apk-35-11_GM406889139.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_002_off00003635.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3635 24012 bytes
SHA-256: e0266fb545c98823e3f9f94baa483b09b90a3cbb3fb5fb4341e059ff725351f8
font_01_sfnt_off00006caf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6CAF 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00007660.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7660 18572 bytes
SHA-256: 51c95658009ee6a6ae875a8d4133a79c51d36fbd34bac1203a2f2fe060da7c96

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