Malicious PDF — malware analysis report

Static analysis result for SHA-256 15977a602cf7a9db…

MALICIOUS

PDF

38.4 KB Created: 2021-05-21 00:12:31 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fba6b66c0b8017cdc3e58a9d5b8c0107 SHA-1: fc5ae2411bc12bb240f78090d5f71cd668c9758e SHA-256: 15977a602cf7a9dba4770de4e1383c4e0903e9ffb9c4cac51508f52dd0f2fa22
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 Robux or game hacks. The embedded URL 'https://netcdn.xyz/app/431946152/get-me-robux-for-free-game-hack' is a primary indicator of this malicious redirection. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly suggest a phishing or malware distribution attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7268

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/get-me-robux-for-free-game-hack In PDF document text
    • http://gameanglinginstructors.co.uk/images/coin-master-free-gold-cards-link_GM406889139.pdfIn PDF document text
    • http://gameanglinginstructors.co.uk/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://gameanglinginstructors.co.uk/images/how-can-you-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://gameanglinginstructors.co.uk/images/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://gameanglinginstructors.co.uk/images/how-to-get-free-roblox-hair_GM431946152.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
font_00_sfnt_off0000341f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x341F 24128 bytes
SHA-256: c77e613119d8b086d2ebf0dc85a17d445f923a65e9b2cb6fab345de84b207225
font_01_sfnt_off00006a9a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6A9A 2832 bytes
SHA-256: 77ae1c4cffa647a8fd533dfa4102e94364989f9e80b9cd131876e9d1005899a2
font_02_sfnt_off0000744a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x744A 18312 bytes
SHA-256: 932e048767bb22e6267a54c454926b1d6572868c8ffb63cd4dd0c91a684054b1

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