Malicious PDF — malware analysis report

Static analysis result for SHA-256 2aa445a6a2cd0cbb…

MALICIOUS

PDF

44.6 KB Created: 2021-06-09 09:07:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 02e942aae24f60b1c983e6822996e846 SHA-1: a1e38eea2fb0d3968aaa095bd4bce82b38e3d305 SHA-256: 2aa445a6a2cd0cbb962e9f15e5c34eb5943b6182b8f4153572885c279db745ea
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 0.9865

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.tw/app/431946152/how-to-get-free-emotes-in-roblox-game-hack PDF link annotation
    • https://c2o-library.net/catalog/repository/roblox-com-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hack-crack-for-coin-master-currency_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/optifine-mcpe_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hack-coin-master-app-ios_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-800-robux-for-free_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/pokemon-go-free-promo-codes-2021_GM1094591345.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-hair-roblox_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/tryrbx-site-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/free-robux-websites-that-actually-work-2021_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/how-to-get-free-golden-card-in-coin-master_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/robux-hack-free-robux_GM431946152.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/minecraft-java-edition-free-trial_GM479516143.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/coin-master-free-spin-codes_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/hack-coin-master-apk_GM406889139.pdfIn PDF document text
    • https://c2o-library.net/catalog/repository/roblox-free-ss-excutor_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_004_off00004f89.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4F89 26544 bytes
SHA-256: cb55de7ed11825381028ae872fc2f1321eb8bb965c81b516e6a7a9cce166ac0a
font_01_sfnt_off00008b0d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B0D 18476 bytes
SHA-256: d4a485d334be037e3382143dbd0306144350d0845d9cd38408ee45fecbc04e6f

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