Malicious PDF — malware analysis report

Static analysis result for SHA-256 a0bde80d603b9fec…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 02:49:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4f7f96bf5634e2be1c569a332c4f88f0 SHA-1: e70ac3febeb35499669031da1895c2a08cda5178 SHA-256: a0bde80d603b9fecfa866e950168fa0d0a653ca69b44aafe1bdc351b234ff358
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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/406889139/free-spins-for-coin-master-hack-game-hack PDF link annotation
    • https://perpustakaan.stami.ac.id/repository/give-me-robux-now_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spin-27_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-spin-coin-master-link-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/rbxoffers-earn-free-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/roblox-script-hack_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/www-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-robux-websites-that-work_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-card-hack_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/coin-master-hack-2021-iphone_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/what-tiktok-free-views-without-verification_GM835599320.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-roblox-accounts-generator_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/free-coins-and-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id//repository/minecraft-education-edition-free-download_GM479516143.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/roblox-free-robux-codes-on-ipad_GM431946152.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-daily-coin-master-coins_GM406889139.pdfIn PDF document text
    • https://perpustakaan.stami.ac.id/repository/free-t-shirt-roblox_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_off00003202.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3202 22756 bytes
SHA-256: 26445c752d374870b6c0a855afd7f716d2526922912519b43b530b87622fe38a
font_01_sfnt_off00006516.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6516 18344 bytes
SHA-256: 1b9c2ef9418efdd4f31bdac1407ea9f2d903a284f26a3d935c42a711d8cabc04

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