Malicious PDF — malware analysis report

Static analysis result for SHA-256 494d48bd6276e35b…

MALICIOUS

PDF

41.8 KB Created: 2021-05-12 21:32:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 89e895bdf82abb6fbbfe91616ae518a9 SHA-1: 765850cae4e0723dbd070987a0eb17876f7b390a SHA-256: 494d48bd6276e35b48492ef389ffc692803cca17f9ba6933633a8214c84dcffc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The document contains a prominent link to a website promising free in-game currency, which is a common lure for scams and malware. The ML classifier strongly flagged this PDF as malicious, and the presence of multiple embedded URLs further supports a malicious intent. While no scripts were explicitly extracted, the document's structure and content suggest it's designed to redirect users to potentially harmful external sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/how-to-get-free-spins-grom-coin-master-game-hack In PDF document text
    • http://www.sfakia-online.com/images/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-gold-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/archery-master-3d-coins-hack_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/hacks-para-roblox_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-free-spins-2-5-2021_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-tool-hack_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/what-is-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/websites-that-give-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://www.sfakia-online.com/images/fan-page-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-apk-mod-hack-download_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-to-get-minecraft-for-free-on-tablet_GM479516143.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-do-you-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-support_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/android-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/best-tricks-co-robux_GM431946152.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_003_off00004815.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4815 24932 bytes
SHA-256: cc6b494579dcdc59bd5ac4db70a0f7d8279d724c3c6a4d6a4bdaf9a0b36cab5b
font_01_sfnt_off000080de.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DE 18308 bytes
SHA-256: 54bc4cb339ab54a414e81dbc8c78cd983f23e840174d14985084a71892f993b4

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