Malicious PDF — malware analysis report

Static analysis result for SHA-256 b8502d9d7fc3f28d…

MALICIOUS

PDF

45.4 KB Created: 2021-06-10 13:44:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: bddd645e3db25d28fc32c6880dcfcfbd SHA-1: 1237825e491b789f0375d267eee293022d3d9127 SHA-256: b8502d9d7fc3f28d01c4e4711ec8d28c3b8f170858d5b3d73638743b166dfbec
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a lure related to game hacks and diamonds, directing users to a known malicious redirector URL. This suggests a phishing or scam attempt designed to lead users to potentially harmful content or further malicious downloads. The ML classifier also flagged this PDF as malicious.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9864

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.tw/app/431946152/how-to-hack-diamonds-roblox-game-hack In PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/minecraft-ios-mods_GM479516143.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-play-minecraft-online-for-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-daily-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-free-spins-and-coins-today-gift-reward_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-heaven-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/can-you-get-in-trouble-hacking-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-coins-coin-master-link_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/get-free-robux-without-human-verification_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/how-to-get-free-robux-easy-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/broken-bones-4-roblox-hack_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-free-spins-link-blogspot-2021_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/coin-master-daily-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://perpustakaan.akper-serulingmas.ac.id/repository/free-robux-glitch-2021-ios_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
font_00_sfnt_off00005416.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5416 24744 bytes
SHA-256: 064d2f3ec48dbcdbc902078792e242daeab7172e774ae5b81092bc2ee269cb21
font_01_sfnt_off00008c89.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C89 19068 bytes
SHA-256: 43ebe3780e0b2badf5625c500116da0e49de73a5f9306e9d60fa358743e84acd

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