Malicious PDF — malware analysis report

Static analysis result for SHA-256 5a8fe627337c9da2…

MALICIOUS

PDF

40.7 KB Created: 2021-05-17 02:09:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 2cfa3846279cc75d174a1d3a43e5dff9 SHA-1: e832d13738f1c60994b329ba76a64ad6c85e6b28 SHA-256: 5a8fe627337c9da29072eccd21cc0626dcb5311b07388af6f2f91e0b3701c4a7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of 'free generator / game hack' to entice users to click on embedded links. Multiple heuristics indicate these links lead to malicious redirector infrastructure, specifically pointing to URLs associated with game hacks and free spins. The document's structure and embedded links suggest an attempt to redirect users to potentially malicious websites, likely for further exploitation or phishing. No scripts were extracted from this sample.

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/free-spins-game-hack In PDF document text
    • http://sid3r.com/images/coin-master-34-4-free-download_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/unlimited-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/mcpe-master-hack-unlimited-coins_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/hacks-for-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/100-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/roblox-promo-codes-free-robux_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/roblox-hacks-com_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/get-free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-online-hack_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/free-robux-gift-card-generator_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/como-hackear-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-hack-without-human-verification-2021_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://sid3r.com/images/coin-master-hack-tool-download_GM406889139.pdfIn PDF document text
    • http://sid3r.com/images/how-to-get-minecraft-for-free_GM479516143.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_off000047d1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47D1 24300 bytes
SHA-256: 52e3a77f5ca928bf49316bb067bf288d4795b3d21724f984c2c87ec0c81bd474
font_01_sfnt_off00007f77.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7F77 17412 bytes
SHA-256: 6c1c32b97f4bf65551242dd1dc58e8e825ad8a01d5ccf0df5c631e6ff61c0786

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