Malicious PDF — malware analysis report

Static analysis result for SHA-256 f87d1002d50c8c56…

MALICIOUS

PDF

40.7 KB Created: 2021-05-21 09:23:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: db2dadfc7963b041be809a0a00124554 SHA-1: 143fa7081f7450da3ff768c81ee1a97a32cabcef SHA-256: f87d1002d50c8c56f53100b36006a003e3f5c7046b86b1d375dbd26ab052b892
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of free game currency or hacks. The document body explicitly mentions 'Free Robux' and 'Game Hack', reinforcing the phishing 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 0.7499

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/431946152/how-to-get-free-robux-without-downloading-anything-game-hack In PDF document text
    • https://successfulauto.ru/images/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • https://successfulauto.ru/images/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://successfulauto.ru/images/coin-master-link-app_GM406889139.pdfIn PDF document text
    • https://successfulauto.ru/images/www-claim-gg-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://successfulauto.ru/images/free-money-and-spins-coin-master_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_off00003549.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3549 25240 bytes
SHA-256: bab84e9761cdbda1f0fbab77f775dfc78005cd7e96cb8e5072dff2f38ae26266
font_01_sfnt_off00006f13.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6F13 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off000078d5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x78D5 19880 bytes
SHA-256: b3cc443709e3d0792834aff36fc45ebf0729ec5a88bbf4f00dbe60b4c0075203

Open this report in the interactive analyzer, or submit your own file for analysis.