Malicious PDF — malware analysis report

Static analysis result for SHA-256 c0743cabd914193a…

MALICIOUS

PDF

36.2 KB Created: 2021-05-23 15:16:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 19179a497a979454492a9fd858fff989 SHA-1: f2a6836b9e592cf3f17e0c2d641eac3656960bf6 SHA-256: c0743cabd914193ac1a0008667b1a78bd60b95b5e7714a6ba4798404f4f64d6a
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 0.9492

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/how-to-get-free-robux-codes-game-hack PDF link annotation
    • https://www.smartitbg.com/images/free-minecraft-server-hosting-24-7_GM479516143.pdfIn PDF document text
    • https://www.smartitbg.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • https://www.smartitbg.com/images/multiplayer-master-hack-coins_GM406889139.pdfIn PDF document text
    • https://www.smartitbg.com/images/how-to-get-free-robux-on-computer_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
stream_002_off00003352.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3352 24800 bytes
SHA-256: 2da70636a5826adce7445293e53a6d79f45be9883c1f44686c28b2e8dd0c3e26
font_01_sfnt_off00006b6c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6B6C 18456 bytes
SHA-256: 647704a1f8ac96c456e26df3796ee2ada4959e42324ca69004a5f2968b1e2bf7