Malicious PDF — malware analysis report

Static analysis result for SHA-256 9dc169644e16aecd…

MALICIOUS

PDF

39.5 KB Created: 2021-05-21 22:10:59 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fcd87f0b064a0030339102c489fc9ac0 SHA-1: d6dbfc3eae454edcea6a2889ab0653489dead4d2 SHA-256: 9dc169644e16aecdbdeee0770b43635d57ec71b7e0b34064403bb879e73808cc
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links, including one pointing to a malicious redirector disguised as a game hack generator. The document body explicitly prompts the user to 'CLICK HERE TO ACCESS MINECRAFT GENERATOR', reinforcing the lure. The presence of embedded URLs and the ML classifier's high confidence score indicate a malicious intent to redirect users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9476

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/479516143/how-to-get-minecraft-for-free-on-mobile-game-hack In PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/cool-free-minecraft-skins_GM479516143.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/free-robux-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/tiktok-free-fans_GM835599320.pdfIn PDF document text
    • http://www.nguyentraiedu.vn/cms/public/upload/files/free-robux-com_GM431946152.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 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off0000370f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x370F 30092 bytes
SHA-256: 9356d033bebff72178d1618ef7bef23503e6687b83565f18c5d2334a394ead9a
font_01_sfnt_off000079e4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x79E4 18104 bytes
SHA-256: 355b14cb1237cfcb324f2687d1fc3cafef0ca686705333751d3cf0333155011f

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