Malicious PDF — malware analysis report

Static analysis result for SHA-256 16265eb557bbe98f…

MALICIOUS

PDF

34.0 KB Created: 2021-07-05 01:23:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 6feb5f7250d20cc45858c89d0dff3435 SHA-1: a7d3b7c8a5b8efd6f7d611b95d294828be21b4d6 SHA-256: 16265eb557bbe98f06e77b9fa74d11a51273ec50a049479260ce2d1c908c66e6
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/479516143/minecraft-bedrock-edition-pc-download-free-game-hack PDF link annotation
    • https://financia-business-school.com/static/upload/files/master-coin-master-free-spin_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-hexus-free-download_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/cheat-cs-go-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-robux-net_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-spins-link-download_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/wurst-mc_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/roblox-speed-hack-may-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/infinite-jump-hack-for-roblox-devs_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/can-you-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-for-pc-free-download_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/free-minecraft-gift-codes_GM479516143.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-hack-accounts-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/how-to-get-an-item-for-free-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/coin-master-free-coins-and-spins-2021_GM406889139.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/is-free-robux-real_GM431946152.pdfIn PDF document text
    • https://financia-business-school.com/static/upload/files/get-free-robux-gg_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_off0000300b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x300B 21828 bytes
SHA-256: dd4c6d99cc772e5fea5aac6f4a25975a3daa0fc2cf716c03baf638ca70975166
font_01_sfnt_off00005fda.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDA 19120 bytes
SHA-256: 18cb023a17afcf6f32a9a51320420adca51e0723189dec2cb2e77558246ce529

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