Malicious PDF — malware analysis report

Static analysis result for SHA-256 98befc6402f05a48…

MALICIOUS

PDF

42.2 KB Created: 2021-05-19 14:49:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6492cdc2e4831cb46e61cb798331d2b1 SHA-1: d20c0727facf0ae43d6bbf88955574cdae9f3a56 SHA-256: 98befc6402f05a483529903768012f2c0bd15acbfe43dd65269471fbd03d9e26
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 0.9971

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.xyz/app/431946152/robux-generator-no-survey-game-hack PDF link annotation
    • http://sellitafrica.com/media/storage/editor/files/how-to-hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/is-minecraft-free-on-switch_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-coin-master-spins-daily_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/minecraft-games-free-download_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-400-spin-link_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-hacks-iphone_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-link_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-exe_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-minecraft-for-free-on-ps4-2021_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-site_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spin-and-coins-links_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-hack-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-34-4-hack-download_GM406889139.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_off000049ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x49EE 24380 bytes
SHA-256: 2cffe6abe689181e82f67c491e9c454dfafe306219097fc18151eaf82a8fff43
font_01_sfnt_off000081b9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x81B9 18476 bytes
SHA-256: 8d7caae1347775e8ca08dc472fe9114d87f2701527a8ea14c41e6a126f1cfe3e

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