Malicious PDF — malware analysis report

Static analysis result for SHA-256 5af0c8a3889a83a7…

MALICIOUS

PDF

39.9 KB Created: 2021-05-22 22:09:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b9a7f1a9691aec311d795a8f95c25b7c SHA-1: 9fca2932b62c8d5f363907fa038fd09cc7be9c8c SHA-256: 5af0c8a3889a83a723a2ab706807dad53c3c6ffce38303ce03dfbffa4eade0b3
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains heuristics indicating it's a lure for game hacks, specifically 'free Robux codes'. It embeds multiple URLs that likely lead to malicious content or further downloads. The ML classifier also flagged this PDF as malicious, supporting the assessment of a phishing or scam attempt.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8068

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/free-robux-codes-game-hack PDF link annotation
    • http://hk-kan.org/images/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://hk-kan.org/images/hack-coin-master-link_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/coin-master-free-spins-and-coins-for-today_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/mcpe-master-hack-coins_GM406889139.pdfIn PDF document text
    • http://hk-kan.org/images/minecraft-com-free_GM479516143.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_002_off00003105.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3105 26352 bytes
SHA-256: 841c5c39002f3c67960e2432c3956b7bb35ad4bfa8823ec95999fd37363fe6e9
font_01_sfnt_off00006dad.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6DAD 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00007abf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7ABF 18188 bytes
SHA-256: 7763b0eba74f003993d6ddc379ef756dfeeff7cedd1b34d70c41f8674d393ab3

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