Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a46d41f341520ae…

MALICIOUS

PDF

45.1 KB Created: 2021-05-17 14:37:19 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: a68435c52ea2ad8408e34ee107d9aa88 SHA-1: 403b983fb9306a1d4754da86c5e73e18efac83b6 SHA-256: 8a46d41f341520ae564fff269bf43f91aa9278cb6eb7658fcc1bc8f5ee0d2a96
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF document contains multiple embedded links that lead to known malicious redirectors, specifically advertising 'free generators' and 'game hacks' for popular games. These links are designed to lure users into clicking, likely leading to further malicious content or downloads. The ML classifier also flagged this PDF with high confidence.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9754

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-hacks-2021-game-hack In PDF document text
    • http://www.sfakia-online.com/images/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-time-speed-hack_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-do-you-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.sfakia-online.com/images/do-coin-master-hacks-work_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-draw-roblox_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-free-spins-link-facebook-page_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-daily-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-hack-without-verify_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-free-daily-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-flip-master-coins_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/get-me-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/best-free-spins-link-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/minecraft-hax-download-no-virus_GM479516143.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-hack-org_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-to-hack-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/how-can-i-get-free-coinsn-coin-master_GM406889139.pdfIn PDF document text
    • https://www.urcouponsdeal.com/2019/03/coin-master-free-spin-and-coin-links.htmlIn 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_003_off0000498d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x498D 24420 bytes
SHA-256: 71b836214c624f41c964c67d306363f2bef7bf78879f71dda8b971cb0b013cfe
font_01_sfnt_off000081b0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B0 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008e36.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E36 18116 bytes
SHA-256: 17974cef81917e5ef69542194afa433aff210173cc902887fbc2b56a9328dd03

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