Malicious PDF — malware analysis report

Static analysis result for SHA-256 e09a2454c8e0b0cf…

MALICIOUS

PDF

50.7 KB Created: 2021-05-19 01:49:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 995eb8e7dffcd6dafc986f5f64d1d0fe SHA-1: a83bb57540da4bef69ae8aa6840ddd55dbfd07b2 SHA-256: e09a2454c8e0b0cf0491853565b15e37df52cdef627084b69dcb6387fdecea4c
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically promoting "game hacks" and "free coins/spins" to lure users. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the embedded URLs and the nature of the lures strongly suggest a phishing or scamming attempt, likely leading to further malware download or credential harvesting.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8594

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-coins-and-spins-app-game-hack In PDF document text
    • http://www.isovca.com/images/roblox-got-talent-piano-hack_GM431946152.pdfIn PDF document text
    • http://www.isovca.com/images/get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://www.isovca.com/images/coin-master-daily-free-spins-link-today-haktuts_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/coin-master-shield-hack_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/coin-master-spin-ml_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.isovca.com/images/https-oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • http://www.isovca.com/images/client-minecraft_GM479516143.pdfIn PDF document text
    • http://www.isovca.com/images/coin-master-app-free-download_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/free-spins-and-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://www.isovca.com/images/appsmob-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.isovca.com/images/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.isovca.com/images/coin-master-free-400-spin-link_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/easy-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/roblox-hackers-list_GM431946152.pdfIn PDF document text
    • http://www.isovca.com/images/60-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.isovca.com/images/minecraft-xray-hack_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b38.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B38 25228 bytes
SHA-256: 82630e08310b5642255fa1345035850c079db25f2e850abadd3babca5b515c7d
font_01_sfnt_off0000845f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x845F 4084 bytes
SHA-256: df85173feea72dc2f2189124c35b140faf44ef7a36f3496b492965e474480a3b
font_02_sfnt_off00009218.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9218 7332 bytes
SHA-256: d811e0aca85f3b94c42cd1240eec68b8eb378f3d8be5e408d3f6abd0f11f834d
font_03_sfnt_off0000a431.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xA431 18060 bytes
SHA-256: f77ee24e01944806ea28e16fd73427a54f7109e241804df06ce657d8c6d11cfb

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