Malicious PDF — malware analysis report

Static analysis result for SHA-256 d74974e2ef0f2e29…

MALICIOUS

PDF

44.8 KB Created: 2021-06-03 14:41:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: b0107430221077c61f8c03f44c09e3b6 SHA-1: 70f4a1a8860316bc2ba35e14a4447ce0519f6ffb SHA-256: d74974e2ef0f2e296ff46900c43f1fedc0b404c7babc60128280fca9c596f643
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

This PDF document contains multiple external links, with a primary URL pointing to a 'robux-download-game-hack' resource, indicating a lure for potentially malicious downloads. The ML classifier strongly flagged this PDF as malicious. While no scripts were directly extracted, the presence of embedded URIs and the nature of the lure suggest an attempt to exploit user interest in game-related cheats to deliver a payload.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/robux-download-game-hack PDF link annotation
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/grab-points-login_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-start-a-minecraft-server-for-free_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-coins-coin-master_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-top_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecraft-for-free-on-laptop_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-mods-for-minecraft-pe_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/code-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-no-scam_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/how-to-get-free-robux-without-paying_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/free-minecraft-domain_GM479516143.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/bux-life-free-robux_GM431946152.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://digilib.stieama.ac.id/repository/appsmob-coin-master-hack_GM406889139.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_off00004eaf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EAF 26784 bytes
SHA-256: 1bb436108e40564f7842866d35dfcccf1441dc5cbd2e2f08f8fcb3fd651d47b4
font_01_sfnt_off00008b31.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B31 18656 bytes
SHA-256: 643f530bc401710360b2f74e2e590a7f6ab15445ebda3165faa7e078ea1fa698

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