Malicious PDF — malware analysis report

Static analysis result for SHA-256 9c865c7db9dd5c82…

MALICIOUS

PDF

32.8 KB Created: 2021-07-20 03:52:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: 773f30dc2de84e58574622c2e2eb4242 SHA-1: dd9af94fb00ea57ab8dd0bb41de7ba885a81a1d0 SHA-256: 9c865c7db9dd5c82b2d75793e45d3dbf286b2bb839df2e077d06402e1bdc80b9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a common lure of free game-related items to trick users into clicking malicious links. The embedded URLs, such as http://netcdn.tw/app/479516143/minecraft-free-game-hack, are identified as malicious redirectors. The document's structure and content suggest it is designed to lead users to potentially harmful websites, likely for further exploitation or malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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/479516143/minecraft-free-game-hack In PDF document text
    • http://www.sscs-uae.com/userfiles/files/give-me-free-robux_GM431946152.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/free-robux-obby_GM431946152.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/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/how-to-get-followers-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/coin-master-hack_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/free-tiktok-fans-and-likes_GM835599320.pdfIn PDF document text
    • http://www.sscs-uae.com/userfiles/files/coin-master-free-spins-2021_GM406889139.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
font_00_sfnt_off00002ce1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CE1 23140 bytes
SHA-256: a4367ec96381adf932f5e3c666a8e9ad22a1ae818d5777b07305db8a2b45607c
font_01_sfnt_off0000607b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x607B 17568 bytes
SHA-256: 2778e064ee8e4e3a4bd3984a17bb7eaaeefaa41a67eb131b8ade69fe1653bbfc

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