Malicious PDF — malware analysis report

Static analysis result for SHA-256 39af01716c2685ae…

MALICIOUS

PDF

36.7 KB Created: 2021-05-24 20:30:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d80e9fe0a300c2a922ce3357cc785bf7 SHA-1: d4f5deaf56ad37e06d71a4d258301d09cffe56fd SHA-256: 39af01716c2685aecc6b5b3c66b1d6bdd0d9752d1f5d777a76e7b594c89b2725
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to known malicious redirectors and game hack lures, indicating a phishing or scam attempt. The embedded URLs, such as 'https://netcdn.xyz/app/406889139/coin-master-free-spins-link-game-hack', are designed to lead users to potentially harmful content or further malicious sites. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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-game-hack In PDF document text
    • http://nonogos.com/images/free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://nonogos.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://nonogos.com/images/roblox-com-robux_GM431946152.pdfIn PDF document text
    • http://nonogos.com/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://nonogos.com/images/how-to-hack-people-in-roblox_GM431946152.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_off00003336.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3336 26704 bytes
SHA-256: b9b42c493594d1df4df4316d207503da5acb52e8a65678e8fc19b2b1f43d075b
font_01_sfnt_off00006f0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F0B 18056 bytes
SHA-256: a4f33549350803e8a819cbfad6b4ff3cdc0b302ceab74af9f2f663eab6bd9ec0

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