Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e06327d43631b0…

MALICIOUS

PDF

42.8 KB Created: 2021-05-19 04:08:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3a47e8c63d13775f099044a36a2ce7ed SHA-1: adcf031248376b94ac9ce48688b5ee2df5bc6f2b SHA-256: e8e06327d43631b0cd6df189ccd24d381ba96dd5002dc3d323f1969c40473eb7
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links to known malicious redirector infrastructure, specifically targeting users with lures for game hacks and free in-game currency. The document body and embedded URLs suggest a phishing or scam attempt designed to lead users to potentially harmful websites. No scripts were extracted, but the presence of malicious links and the ML classifier's high confidence indicate a high likelihood of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/835599320/what-tiktok-free-views-hack-game-hack In PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-spins-link-june-2021_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-get-free-spins_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/how-to-get-robux-easy_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/hack-coin-master-apk-33_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/download-minecraft-free-hiapphere_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-daily-free-spins-link-march-2021_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-ad_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/minecraft-free-download-iphone_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-robux-clothes_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/toolbox-for-minecraft-windows-10_GM479516143.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/roblox-free-executor_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/robuxlove-net-free-robux_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/oprewards-com-roblox_GM431946152.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-cards_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/coin-master-pc-hack_GM406889139.pdfIn PDF document text
    • https://www.indahkonveksi.com/ckfinder/userfiles/files/free-minecraft-maps-pe_GM479516143.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_003_off000048d2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x48D2 26148 bytes
SHA-256: 0487f3a8814e404066cbe96b86b6439f91dc947d5118cfac9a73f09ed71278d7
font_01_sfnt_off000084ce.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x84CE 18348 bytes
SHA-256: 319cfd2bc4faa6371d64cb524aa70a8a40d02c2304822c0164edcf8cb7c6b9ee

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