Malicious PDF — malware analysis report

Static analysis result for SHA-256 f009731d3eee5af9…

MALICIOUS

PDF

38.7 KB Created: 2021-05-22 02:09:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 1ff4dda158704be6f88d7faf71a29a8d SHA-1: 13e387b46e87dcacb0ba52ed072194f9ad45c4f4 SHA-256: f009731d3eee5af95ca4e0b50d0c2b857af12671fe441534e5ddbdd4f935874e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to websites that are either known malicious redirectors or host potentially malicious content related to game hacks. The document body explicitly mentions 'Coin Master Free Spins Daily' and 'CLICK HERE TO ACCESS COIN MASTER GENERATOR', reinforcing the lure. The ML classifier also flagged this PDF as malicious, indicating a high probability of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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-daily-game-hack In PDF document text
    • http://nicoletastancu.ro/images/roblox-rape-hack_GM431946152.pdfIn PDF document text
    • http://nicoletastancu.ro/images/roblox-fly-hack_GM431946152.pdfIn PDF document text
    • http://nicoletastancu.ro/images/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://nicoletastancu.ro/images/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://nicoletastancu.ro/images/coin-master-hacks-for-pet-food_GM406889139.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_002_off0000335b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x335B 30512 bytes
SHA-256: 6c8d2ad5ca33efbcf4806a2f3fc25dd8f049e5fa2cddcee07134fa547ee96a10
font_01_sfnt_off0000760b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x760B 18308 bytes
SHA-256: 220bb6194b1ab8a2bb399ca4a862914ac8d15b354bb0df2c737bc67699221dc9

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