Malicious PDF — malware analysis report

Static analysis result for SHA-256 8e19ffd0d4355222…

MALICIOUS

PDF

42.0 KB Created: 2021-05-17 13:47:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 3d6dc67335da876e06f7aa735cd5061b SHA-1: 4a405fdb4c8b528ce858ea191158750e204e4799 SHA-256: 8e19ffd0d43552225ffb9e46871050a71cd0d993a848ece5adff7c701dd43b49
168 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains embedded links that lead to a malicious redirector, masquerading as a 'free generator / game hack'. The document body and heuristics indicate a lure for game-related cheats or downloads. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution or redirection to a malicious site, likely to download a second-stage payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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.
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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/479516143/minecraft-for-free-apk-game-hack In PDF document text
    • http://www.sfakia-online.com/images/coin-master-hacks-and-cheats_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/free-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-free-spins-link-2021-april_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-rewards-free-spins_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/minecraft-mac-free_GM479516143.pdfIn PDF document text
    • http://www.sfakia-online.com/images/instantrobux_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/free-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/roblox-hack_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-unlimited-spins-apk-free-download_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-free-spins-link-facebook_GM406889139.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/cmaster-club-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/robux-free-online_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/daily-free-spin-coin-master-link_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-cheat-codes-free_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-com_GM406889139.pdfIn PDF document text
    • http://www.sfakia-online.com/images/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://www.sfakia-online.com/images/coin-master-spins-and-coins_GM406889139.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_off00004a32.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A32 25048 bytes
SHA-256: 65348f310676aa0c3007d3ce82c7a40c512d6b224c737174cc002272e3bfebbf
font_01_sfnt_off00008293.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8293 18056 bytes
SHA-256: d47e60dea5201fd8468efb81a59f0775697a9902aff7ce548d06165675d44cc7

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