Malicious PDF — malware analysis report

Static analysis result for SHA-256 56ac0ed8a63747b9…

MALICIOUS

PDF

37.5 KB Created: 2021-07-09 14:46:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 100f1c8ce080f9b04cb2e236813e44b8 SHA-1: 0abd05904d6cff613cc41222d63168ce380de438 SHA-256: 56ac0ed8a63747b9fad2eacbc6eac0a1abc49e4a4ca55602d2a8b8d4751cd11d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to 'Free Coins And Spins 2021' and includes a link to a game hack generator. This suggests a social engineering tactic to entice users to click the malicious link. While no scripts were directly extracted, the PDF structure and embedded URI heuristics indicate a malicious intent to redirect users to potentially harmful content.

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/406889139/free-coins-and-spins-2021-game-hack PDF link annotation
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-roblox-toy-codes-not-used_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/get-free-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/hack-roblox-perfil_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-no-human-verification-2021-pc_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/roblox-hack-not-patched_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/roblox-hacks-online-no-download_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/bloxburg-free-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/a-free-2021-roblox-reedem-card_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/royal-high-school-roblox-how-to-gwet-free-mony_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-roblox-youtubers-accounts-with-passwords-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-minecraft-skins-ps4_GM479516143.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-link-download-for-iphone_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/free-robux-net_GM431946152.pdfIn PDF document text
    • https://elearning.mtsnkarimun.sch.id/__statics/gudangsoal/files/hacks-para-coin-master_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_002_off00003850.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3850 24172 bytes
SHA-256: 21db3b49346c79d1be37e1254d711d22e38af9364a753dda19dfc46e93c867b9
font_01_sfnt_off00006eeb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6EEB 18644 bytes
SHA-256: 4c4e65cba5d2f67dd58f66294ad28bd569e509cdb282affccbe4ebd21773572e

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