Malicious PDF — malware analysis report

Static analysis result for SHA-256 92ebc209de2a5537…

MALICIOUS

PDF

47.9 KB Created: 2021-05-14 11:01:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ab8fdfc095df4f3798afe5a9765af42b SHA-1: bffd0c9b4301180d91ada945e40f319085f6fdce SHA-256: 92ebc209de2a5537c9d1a9735710f2b9049b437d45466e076048a3b9afe49a6d
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free Robux' or game hacks. The document body, though partially garbled, also contains a URL pointing to similar malicious content. These findings strongly indicate a phishing or scam attempt designed to lead users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9977

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/earn-free-robux-game-hack In PDF document text
    • http://acp-institut.fr/images/how-to-get-free-robux-without-email_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-minecraft-videos_GM479516143.pdfIn PDF document text
    • http://acp-institut.fr/images/how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/how-to-get-free-robux-for-free_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/roblox-hack-download-pc_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/hack-coin-master-online-without-human-verification_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/google-moon-active_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-spin-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/coin-master-free-spin-ml_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/earn-free-robux-today_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-spins-on-coin-master-game_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-come_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-robux-videos_GM431946152.pdfIn PDF document text
    • http://acp-institut.fr/images/free-promo-codes-for-coin-master_GM406889139.pdfIn PDF document text
    • http://acp-institut.fr/images/roblox-games-that-give-you-free-robux_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_003_off000048ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48AC 37016 bytes
SHA-256: dc6a1de9f11d3ef0a7faad35e396433a8ffb45f3de1608b5c81a01e5d5823706
font_01_sfnt_off000099aa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x99AA 18244 bytes
SHA-256: 032754c85be32afc54ce42ff57082bfda3d842c531a4409870c690b3212eb60e

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