Malicious PDF — malware analysis report

Static analysis result for SHA-256 48f7a1334aadd7bb…

MALICIOUS

PDF

34.7 KB Created: 2021-07-05 17:33:43 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 897ff4b5227342e02b24132a1dbee62c SHA-1: 6096bc2a13681b734f22ca7afcade6a089597df9 SHA-256: 48f7a1334aadd7bbc80e4e48dc0e07b596a093f7b0b5c4593755dd1307abf0df
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/431946152/free-ways-to-get-robux-game-hack PDF link annotation
    • http://perpus.unpam.ac.id/repository/roblox-email-reset-hack_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-hack-ios-reddit_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/does-coin-master-hack-work_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-coins-coin-master-daily_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-roblox-vip-servers_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-face-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/minecraft-pocket-edition-free-ios_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/cute-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/google-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-a-free-hat-2021-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-robux-generator-2021-no-human-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/how-to-get-free-tokens-in-minecraft-ps4_GM479516143.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/coin-master-free-spins-hack-2021_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/free-coin-master-account_GM406889139.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-jailbreak-robux-hack_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/roblox-hacks-mod-menu_GM431946152.pdfIn PDF document text
    • http://perpus.unpam.ac.id/repository/hack-knife-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_off000030bf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x30BF 22344 bytes
SHA-256: dee9a8d1e395be61d6cfb5ec3dd05ff020eb2d360a0ec6a88cbd01ed11150dcb
font_01_sfnt_off00006209.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6209 19196 bytes
SHA-256: 6d1a8e159d4bd9e74ccf1bcc836087e45007e7eb4657c84ad7a15bd0161a0a92

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