Malicious PDF — malware analysis report

Static analysis result for SHA-256 ae367a92d54a25b2…

MALICIOUS

PDF

45.9 KB Created: 2021-06-04 01:51:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-24
MD5: 8af8a3b8cf8c929dde1beda3d88388d0 SHA-1: 2ed96ef5f616da3b76d81ea9ad2601f440aee0b3 SHA-256: ae367a92d54a25b26e2b5d567308451ad4987d86fd94817e4ff51ab1de82c7e8
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 primary link directs to a known malicious redirector infrastructure, which likely serves as a gateway to further malicious content or phishing pages. While no scripts were explicitly extracted, the PDF structure and embedded links strongly suggest a malicious intent to redirect users to harmful sites.

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.online/app/431946152/free-roblox-accounts-with-robux-that-work-not-banned-game-hack In PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/blox-pink-robux-free_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-games-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/get-free-spins-link-in-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/how-to-hack-roblox-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/blogspot-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hack_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/minecraft-apk-download-v1-144-2-free_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-minecraft-realms-to-join_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-100-spin_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/roblox-free-roblox_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-minecraft-mods-for-ps4_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-multiplayer-minecraft-server_GM479516143.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://perpustakaan.stietenggarong.ac.id/repository/free-robux-only-1-step_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_004_off0000521b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x521B 25560 bytes
SHA-256: 8d497d0fc9777fcacddbdcda12cd1cc54bca1af2cea1348529823e57b2885990
font_01_sfnt_off00008e0c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E0C 19248 bytes
SHA-256: efa3c9b2c8f55d2ce8a78f8ae751aa117ac14b1934403b15023fd1527a527783

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