Malicious PDF — malware analysis report

Static analysis result for SHA-256 6953c774ebdb58b9…

MALICIOUS

PDF

34.8 KB Created: 2021-07-03 19:38:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: ea971c6a719addd39561838c6d92c1f8 SHA-1: 8ceb2a4f2b0b0298ce4215cd03b4f802ca9eb275 SHA-256: 6953c774ebdb58b9fae95f2698fdbaff812e2094bf5d2d7d033d7c99f6900f1e
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors and lures users with promises of game hacks and free items. The primary redirector URL is http://netcdn.tw/app/406889139/coin-mast-hacks-game-hack, which is likely used to deliver a second-stage payload or lead the user to a phishing page. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/406889139/coin-mast-hacks-game-hack In PDF document text
    • http://www.inoxograde.hr/files/minecraft-kill-aura_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-roblox-boy-hair_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-tiktok-likes-and-followers_GM835599320.pdfIn PDF document text
    • http://www.inoxograde.hr/files/oprewards-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/coin-master-free-coin-hack_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/codes-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-spins-coin-master-legit_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-it-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/is-minecraft-vr-free_GM479516143.pdfIn PDF document text
    • http://www.inoxograde.hr/files/free-roblox-toys-redeem-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/xxlolaplaysxd-free-robux-help_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/hack-de-roblox-sin-virus_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/set-hack-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/roblox-hack-client_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/how-to-get-free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/hack-coin-master-android_GM406889139.pdfIn PDF document text
    • http://www.inoxograde.hr/files/fast-easy-free-robux_GM431946152.pdfIn PDF document text
    • http://www.inoxograde.hr/files/hacks-for-british-army-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 7

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

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000307f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x307F 23680 bytes
SHA-256: b3365b28c19766a78944b9c4587f8c79d808e0975da6681aa880c5fcfcce052e
font_01_sfnt_off00006610.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6610 18004 bytes
SHA-256: 9d95a6a02b99d49185e57d1486a892a1617eeb29a1263c5cbf44862ce121196b

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