Malicious PDF — malware analysis report

Static analysis result for SHA-256 c96a251452efdf6d…

MALICIOUS

PDF

49.2 KB Created: 2021-06-03 07:45:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 33c1917fb507f9265eba3f62cb372eb5 SHA-1: be511f866b5686eabebaa0625a994d463b65ec12 SHA-256: c96a251452efdf6d3a4c20c79aef91808c5ae879e1c9e118b5c84c9d81683981
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.online/app/479516143/free-minecraft-skins-pc-game-hack PDF link annotation
    • http://www.perpus.stfm.ac.id/repository/minecraft-java-hacks_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-hack-apk-no-survey_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/hack-minecraft_GM479516143.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/roblox-robux-page_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-home_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-free-spins-promo-code_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-get-roebucks-on-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/www-roblox-com-robux-free_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-robux-just-enter-username-and-password_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/how-to-earn-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-minecraft-wallpaper_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-coins-coin-master-blog_GM406889139.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/wahoo-gaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/free-minecraft-maps-pe_GM479516143.pdfIn PDF document text
    • http://www.perpus.stfm.ac.id/repository/coin-master-claim-free-spins_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/coin-master-mod-apk_GM406889139.pdfIn PDF document text
    • http://perpus.stfm.ac.id/repository/are-robux-generators-safe_GM431946152.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_off000055e6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x55E6 28532 bytes
SHA-256: 44f976f786d1bc4257a6c7ae64527fb53cc431e6dc53e3dfab4821c179ffa09f
font_01_sfnt_off0000958d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x958D 2824 bytes
SHA-256: 32afe7424993ed77feed76f83a3afdb3d3391dbb877b7f4b0d7509f28dd06233
font_02_sfnt_off00009f33.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9F33 17892 bytes
SHA-256: 38d2ac9589c51081060ff5b719ef2985d9213db1bca3ba0b1a36204662c24b5d

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