Malicious PDF — malware analysis report

Static analysis result for SHA-256 a2f07acb15d904df…

MALICIOUS

PDF

35.4 KB Created: 2021-07-09 08:02:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3811604218dfef9b8de885e8421ac236 SHA-1: 318c0651a61bd98ac1878a82a5b643cda2305b2d SHA-256: a2f07acb15d904df719d0408c6c995b937cd2bba915b7052ae07fd24a507b70c
82 Risk Score

Malware Insights

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

The PDF document contains a link and a call-to-action phrase designed to trick users into downloading game hacks. The primary link, http://netcdn.tw/app/479516143/minecraft-bedrock-edition-hacks-game-hack, is flagged as a game hack redirector lure. The ML classifier also strongly indicates maliciousness, suggesting the PDF is part of a malicious workflow.

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/minecraft-bedrock-edition-hacks-game-hack PDF link annotation
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/roblox-hand-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/buy-robux-free_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-by-playing-games_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/roblox-phantom-forces-hack-no-virus_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/roblox-hack-codes_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-free-spins-today-daily-links_GM406889139.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/minecraft-app-free-download_GM479516143.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/blox-world-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/free-robux-hack-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/how-do-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-alcatel_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-free-codes_GM406889139.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/get-free-robux-now_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-gift-link-hack_GM406889139.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/coin-master-free-spins-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-easy-on-pc_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/earn-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.manlimapuluhkota.sch.id/__statics/gudangsoal/files/roblox-hack-account-2021_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_off00003555.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3555 22296 bytes
SHA-256: 75479ddbed67f1abf3f8c132c62cbea44861ba7962bc9a764956d4bcf2e0ef0f
font_01_sfnt_off000066da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66DA 18560 bytes
SHA-256: c6086f00a80ac9dd1c4663510e3c0a85256bf03437e56001caa3ddad15db1f6f

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