Malicious PDF — malware analysis report

Static analysis result for SHA-256 09a63c625c982aee…

MALICIOUS

PDF

42.7 KB Created: 2021-05-13 09:00:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 8e1c538a1890e1d27a558aa1aabe4595 SHA-1: 6245fbbd80cf07dd5328724e8f352dd7e82ed16c SHA-256: 09a63c625c982aee3503134baf2f57d492bf914d979f3e1c84ec477f36fa300b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The ML classifier strongly indicated maliciousness, and the document contains multiple embedded URLs pointing to sites offering game hacks and free currency. The presence of a visual download button heuristic further supports the lure of a malicious download or phishing attempt. 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/coin-master-free-spins-2021-game-hack In PDF document text
    • http://www.reikiusui.it/images/how-to-get-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/free-spins-in-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://www.reikiusui.it/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://www.reikiusui.it/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/robuxy-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/strucid-aimbot_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/coin-master_GM406889139.pdfIn PDF document text
    • http://www.reikiusui.it/images/coin-master-gold-cards-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.reikiusui.it/images/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://www.reikiusui.it/images/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/coinmasterhack-club_GM406889139.pdfIn PDF document text
    • http://www.reikiusui.it/images/minecraft-pe-apk_GM479516143.pdfIn PDF document text
    • http://www.reikiusui.it/images/free-roblox-hack-us_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/instant-robux_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/minecraft-116-free_GM479516143.pdfIn PDF document text
    • http://www.reikiusui.it/images/roblox-cheat_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/coin-master-free-spin-and-coin-links_GM406889139.pdfIn PDF document text
    • http://www.reikiusui.it/images/roblox40com-robux_GM431946152.pdfIn PDF document text
    • http://www.reikiusui.it/images/como-hackear-coin-master_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_off000048bb.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48BB 26900 bytes
SHA-256: f00bab77ca5c7da109181e8dcce062bad0ad247ff42e8066c099a15f25809e73
font_01_sfnt_off00008498.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8498 18288 bytes
SHA-256: 9f7609fba99e53c6baa99bb04d1c7e3f9b7167131c1520eb2a413cdab4a14871

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