Malicious PDF — malware analysis report

Static analysis result for SHA-256 82b670d0a060af59…

MALICIOUS

PDF

49.7 KB Created: 2021-06-10 23:30:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ee9df3f938ddc9c24ae375ce68cefe76 SHA-1: 99ac01b7068c0734b7fbe3e470f63721d82d04b4 SHA-256: 82b670d0a060af5943e4069b83a70c08c5d52b155575fe65629d8e596538ed02
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 0.9796

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 https://netcdn.tw/app/431946152/how-to-get-5-robux-for-free-2021-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/can-you-earn-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-stuff-on-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-working-hack_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/get-free-robux-today_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-hack-on-phone-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/rbxdemon_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-to-get-free-robux-without-downloading-anything_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/www-coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-do-u-hack-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/is-it-possible-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-get-minecraft-on-chromebook-for-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/master-hack-coin_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-hacks-pc_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/minecraft-windows-10-edition-unlock-full-game-free_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/2021-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/village-3-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_004_off0000520f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x520F 28872 bytes
SHA-256: 3203fe85f8a78d80d5a9eda76f9e68ec1df9d9eb096c86e615f55fc3b2912143
font_01_sfnt_off000093dd.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x93DD 2884 bytes
SHA-256: 2d18477cf02c3d021dceb7d1cf159157d9e95d38bcc7e840cb4034911ec14998
font_02_sfnt_off00009dd1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9DD1 18816 bytes
SHA-256: 43bce61155a51815b7dd406ffd9d84433a1060f887b444d8a397c20879b3125c

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