Malicious PDF — malware analysis report

Static analysis result for SHA-256 d70eb77a0a8de3db…

MALICIOUS

PDF

32.8 KB Created: 2021-07-04 14:12:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 5e0d6f6060f1aca2da5bc084452b1fb0 SHA-1: a1424725293e4d1fba890b84ff123298f551be6b SHA-256: d70eb77a0a8de3dbba7201f21e9ce11d3c42a166156d38780f9bad94e04e579c
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.tw/app/479516143/is-minecraft-free-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/inspect-robux-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/http-rbgenappzoneteamcom-roblox-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/cool-backgrounds-roblox-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-april-fools-hack_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hack-scripts-for-roblox-download_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-free-hats-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-lego-hack-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-lab-experiment-hack-script_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/getting-cheated-on-in-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-download_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/voodygamescom-robloxhacks-5_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/hack-adopt-me-roblox-2021-project-alpha-300_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/blogspot-coin-master-spins_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-admin-script-hack-pastebin_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-pe-017-0-apk-free-download-android_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/javascript-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/is-there-any-legit-way-to-get-free-robux_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
font_00_sfnt_off00002ded.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2DED 22380 bytes
SHA-256: 7c362345835b514e1f61a4e4a1dc1a8a265ce69b88cae6ee4d89e9df1930b55a
font_01_sfnt_off00005ee5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5EE5 17856 bytes
SHA-256: 159255378348497ad1eb221f04be374bde70b3f1790c3392219e6e8f26522721

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