Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6900319e3084b49…

MALICIOUS

PDF

45.0 KB Created: 2021-05-17 23:27:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: d5e39f6bea442a5fffbe2ce9b3f3c87f SHA-1: 4822c4a019f3eb5026b95ebd8434c521018cf655 SHA-256: d6900319e3084b49c9ea807c45b19c0bf84e9c1e8993df472327478b7aafa2bd
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 0.9632

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/https-rbx-place-rewards-game-hack PDF link annotation
    • http://axiapublishers.com/images/coin-master-free-spins-instagram_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/minecraft-pe_GM479516143.pdfIn PDF document text
    • http://axiapublishers.com/images/are-there-any-coin-master-hacks-that-actually-work_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/free-roblox-hair-girl_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/get-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/free-coins_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-make-a-minecraft-pe-server-for-free_GM479516143.pdfIn PDF document text
    • http://axiapublishers.com/images/robux-for-kids_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/coin-master-fun-free-spins_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/coin-master-free-blogspot_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/minecraft-windows-free_GM479516143.pdfIn PDF document text
    • http://axiapublishers.com/images/how-to-get-free-robux-on-ipad_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/free-robux-no-survey-or-human-verification_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/coin-master-hack-spins_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/free-roblox-accounts-with-robux-that-work-2021_GM431946152.pdfIn PDF document text
    • http://axiapublishers.com/images/coin-master-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/free-spins-coin-master-cheat_GM406889139.pdfIn PDF document text
    • http://axiapublishers.com/images/roblox-hair-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000045b3.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x45B3 26876 bytes
SHA-256: 3ccebdbe3c82108098ab13e7eee5c7ccb1bace386ba4f217b36c59819068985e
font_01_sfnt_off00008260.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8260 2824 bytes
SHA-256: bd082aa73fbb1a8b3bd2e5c998d3d8e31d1dfc71ea36f846af746f69a0d2ab7f
font_02_sfnt_off00008c14.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C14 18640 bytes
SHA-256: adbb92b042532d7f987745dbbe30e528a9aa5ccea6c943b93cd0d8aa572e92fd

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