Malicious PDF — malware analysis report

Static analysis result for SHA-256 0d6acd14722e8b22…

MALICIOUS

PDF

34.5 KB Created: 2021-07-19 20:58:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: fe0908a362b342d63ae282f22390574b SHA-1: ad10403a26e4a72252bcca36709cc47809ae66ec SHA-256: 0d6acd14722e8b224744a2935cd5ce1de8ecc358c05927307f5e686052d74aea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links, with one specifically identified as a malicious redirector. The document body and heuristics indicate a lure for free game items or hacks, directing users to the malicious URL http://netcdn.tw/app/406889139/how-can-i-get-free-spins-on-coin-master-game-hack. This suggests the file is designed to lead users to potentially harmful websites, likely for further exploitation or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/how-can-i-get-free-spins-on-coin-master-game-hack In PDF document text
    • http://www.sscs-uae.com/userfiles/files/how-to-get-minecraft-for-free-on-ps4_GM479516143.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-texture-packs-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/daily-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-spins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/coin-master-hacks_GM406889139.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/minecraft-online-free-download_GM479516143.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/free-robux-obby_GM431946152.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_002_off0000303f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x303F 23580 bytes
SHA-256: c8984de0bd0ec2bf33e9945827c7968caee4ec982533ec6e187513cd882663c1
font_01_sfnt_off000065c5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65C5 18052 bytes
SHA-256: f4ab70c7a1b321e89283bf56011259b2481f340c7b70b557de06403c5562b8cd