Malicious PDF — malware analysis report

Static analysis result for SHA-256 776aca1059b6a855…

MALICIOUS

PDF

45.3 KB Created: 2021-05-13 05:05:28 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 593bae10e729e8eb8b65de9d1b290c9d SHA-1: 388fa29d9e7b77cc37d8af71cc03bdeb78bf44bb SHA-256: 776aca1059b6a855e37a4074063a5d2615bb59297f0ad2dc2167464a9bc54bb7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'free spins'. The primary malicious URL identified is https://netcdn.xyz/app/406889139/free-spins-coins-coin-master-game-hack. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a social engineering lure to drive users to potentially malicious websites, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9551

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-coins-coin-master-game-hack In PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-link-today_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-apk-free-download_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-blogspot-free-spins_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/bloxland-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/roblox-hack-me-robux_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-robux-hack-us_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/gameoffice-net-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-easy-on-phone_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-apk-35-33_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-hack-com_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/coin-master-daily-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://www.alarqam.ae/userfiles/files/free-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004a8c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4A8C 24608 bytes
SHA-256: 80856a19ba6a351ecd5efe47a581c005cc529fa9a15cc4d699e2468767ee67ac
font_01_sfnt_off0000830e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x830E 3560 bytes
SHA-256: c953d730e49f69c7d62e02a926729ae4a31de13d9a976dc4a95b39cf47066c93
font_02_sfnt_off00008f94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8F94 17884 bytes
SHA-256: 18816d8d761583b578c9833b8849e2eeaed27ef2f16a893d2032c58e3f8148b6

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