Malicious PDF — malware analysis report

Static analysis result for SHA-256 9911447b54572711…

MALICIOUS

PDF

33.3 KB Created: 2021-06-25 23:05:34 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: f958b8dfdd16b05eeb16bf7baa6ac2b5 SHA-1: 2c7280250266c2762dda650d298b707b193594eb SHA-256: 9911447b54572711fcabb540f59887781c07455adc046d07dd8335a3b741b1ef
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.co/app/431946152/roblox-cheat-robux-deutsch-game-hack PDF link annotation
    • https://www.devries-group.de/images/bleu-roblox-hack-key_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-roblox-exploits_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-free_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/robux-cheat-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/master-coin-hack-game_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-roblox-clothes-codes_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/how-to-cheat-at-roblox_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/how-to-get-free-25-robux_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • https://www.devries-group.de/images/car-sim-free-code-roblox_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/free-face-robloxcom_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/roblox-cheat-engine-windows-10_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/coin-master-hack-here_GM406889139.pdfIn PDF document text
    • https://www.devries-group.de/images/dabi-roblox-free-shop-t-schirts_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/phantom-forces-hack-roblox-2021x2021_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-robux-melissa_GM431946152.pdfIn PDF document text
    • https://www.devries-group.de/images/free-executor-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_off00002bd8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BD8 22216 bytes
SHA-256: 8acc9f1816076b37ff97ab609d6194db5f84be8a5cc499f53d47a1a3639a379b
font_01_sfnt_off00005d0b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D0B 19064 bytes
SHA-256: 2518d36d458f5755974fe7a6e6ce48edcaddf06c603f6d511e0f7e742f71e265