Malicious PDF — malware analysis report

Static analysis result for SHA-256 e5deeb806911111d…

MALICIOUS

PDF

44.3 KB Created: 2021-05-10 15:10:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: c1615a9685f18379065bc57c1ab6d353 SHA-1: 48bf1d1f813f20a839e22804e7d05e5550e03cd5 SHA-256: e5deeb806911111da5ed09b1b64b944fa7e85a3c52aafe225507f107e92ccdff
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 0.9868

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/roblox-hacking-website-game-hack PDF link annotation
    • http://tah-li.com/images/inappropriate-roblox-games_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-daily-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/get-me-free-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/how-to-hack-and-get-free-robux_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-robux-generator-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/coin-master-free-spins-youthnow_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/free-robux-easy-and-fast_GM431946152.pdfIn PDF document text
    • http://tah-li.com/images/free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://tah-li.com/images/infinite-robux_GM431946152.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_003_off00003fca.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3FCA 26656 bytes
SHA-256: 413fd638a7e7b0e1a3de4fc0d9b74555923b6f6b28ab95f09341d5b3804e17d7
font_01_sfnt_off00007bf5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7BF5 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_02_sfnt_off00008906.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8906 18892 bytes
SHA-256: e7d47ce6402ad6c34a9dd837b4455ddf5104770abd157e72eb2d384f2e13ef46

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