Malicious PDF — malware analysis report

Static analysis result for SHA-256 938c8b3434a4a3c2…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 15:58:50 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-22
MD5: 79d571325c72a50160a97e4739ee76b4 SHA-1: 0ef71994772e48b64fdac478c66f54956949cd5a SHA-256: 938c8b3434a4a3c2ae41fa577fc2a8699106e6cf01786cbe9787f5297f88b8c0
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/freespinandcoin-blogspot-coin-master-game-hack PDF link annotation
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-spins-coin-master-links_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-private-minecraft-server_GM479516143.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-pokemon-brick-bronze-beta-roblox-wiki_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-phone-hack_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/how-to-get-free-robux-without-downloading-apps-2021_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/www-roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/new-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/roblox-strucid-hit-box-hack-2021-august_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-village-3_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/pokemon-go-free-8-km-egg_GM1094591345.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-clothes_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-coin-master-game_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/coin-master-gameplay_GM406889139.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/boku-no-roblox-hack_GM431946152.pdfIn PDF document text
    • http://e-library.dharmawangsa.ac.id/repository/buy-robux-free_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_off0000316f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x316F 22932 bytes
SHA-256: 764fcde24f60015ed6b53ada021cab30a622fb14c8f1064ac8dc890f3106832a
font_01_sfnt_off000064f5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F5 18636 bytes
SHA-256: d84bb04fefb4f2e9dfb813ccc956a98457a2ce2ab52c22d2d2b9038e7737e303

Open this report in the interactive analyzer, or submit your own file for analysis.