Malicious PDF — malware analysis report

Static analysis result for SHA-256 b423f1ce4195e31f…

MALICIOUS

PDF

34.3 KB Created: 2021-06-28 06:43:22 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 03db61359f27c2b868667111d13ab4d7 SHA-1: ba4c34857dc91b8556837c9224a76802b1116068 SHA-256: b423f1ce4195e31f08763c9faadd2f7553657492d1d802cc2b4cd87beb1a8413
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/dife-cf-free-robux-game-hack PDF link annotation
    • http://sellitafrica.com/media/storage/editor/files/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-script-obfuscator_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-catalogue-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-shirt-templates-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/where-to-find-free-clothes-on-roblox_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/roblox-free-models_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/buzz-the-bee-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-promo-codes-for-robux_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/sb-game-hacker-coin-master_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-coins-coin-master-today_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-giveaway-2021-dot-tk_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-coin-master-generator_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/my-roblox-avatar_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-robux-with-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-girl-faces_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/robux-free-online_GM431946152.pdfIn PDF document text
    • http://sellitafrica.com/media/storage/editor/files/free-roblox-account-with-free-robux_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_off00003025.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3025 22180 bytes
SHA-256: 8393ccb68f06137353ba359fabb8bfc19382fbc011eb6441d05bd9e8ba8ed511
font_01_sfnt_off00006159.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6159 19004 bytes
SHA-256: ccc6e087ed8c4d78fecd23f7b23249c6c616a48f857f66ec59198e8b98924252

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