Malicious PDF — malware analysis report

Static analysis result for SHA-256 016ecc65cc061c34…

MALICIOUS

PDF

37.8 KB Created: 2021-05-24 03:54:21 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 8dba828ccd548551492576f9d606d77f SHA-1: 2a26020861a83511de19310ee8667b5ec93f75ad SHA-256: 016ecc65cc061c34b92a28a41cddcee2311703499466595b8561db1d1b230544
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 0.9407

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/835599320/free-tiktok-followers-no-human-verification-or-survey-2021-game-hack PDF link annotation
    • http://smssahin.com/images/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://smssahin.com/images/roblox-com-hack_GM431946152.pdfIn PDF document text
    • http://smssahin.com/images/free-premium-roblox_GM431946152.pdfIn PDF document text
    • http://smssahin.com/images/moonactive-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://smssahin.com/images/free-tiktok-comments_GM835599320.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
stream_002_off000030ac.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30AC 27480 bytes
SHA-256: 4a3568e69a6db3966ff449c36f61cbeba7c2715070b084460dbffd5757b3ffbf
font_01_sfnt_off00006feb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6FEB 19152 bytes
SHA-256: c6aae516a535c20688ad74e4aa12997c302b82eea592ee03757e951f101f6a27