Malicious PDF — malware analysis report

Static analysis result for SHA-256 5d22bf5a736efe84…

MALICIOUS

PDF

33.9 KB Created: 2021-07-04 02:47:45 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 426b31798aa1b09642b1da7e8aad816a SHA-1: d489ba02f94e2eac194a732183f2e57b00483886 SHA-256: 5d22bf5a736efe8492fce7ec30d4ad8580add6556c7f84814abf044a57177783
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/how-to-get-a-free-minecraft-server-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/tiktok-free-view-kreatif-lucu_GM835599320.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-roblox-card-codes-july-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-no-download_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robux-website_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-legel-and-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/hack-roblox-prion-life_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-download-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-hack-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-gold_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/rainbow-orange-roblox-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-spin-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-free-robux-live_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-how-to-get-free-limited-items_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-without-downloading-apps_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-virtual-code-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_off0000317a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x317A 21972 bytes
SHA-256: 5ac48ee163c383c87b4f520c27f35a34651fea3cec3c4c50129c90afdcb4d791
font_01_sfnt_off000061a2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61A2 18276 bytes
SHA-256: c7687a4ed826b999755e6fe3d140333e3438c4cba827dc1a6d1eeb6d89324bde

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