Malicious PDF — malware analysis report

Static analysis result for SHA-256 408e3996bae9d29d…

MALICIOUS

PDF

40.8 KB Created: 2021-05-15 07:56:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: ebc2b8c081cfae486479f7ba9515fe70 SHA-1: 092bee596df3e741ee44688c2a4f514a9dd6012e SHA-256: 408e3996bae9d29dc70e3bad9e58c8d7d3ff772a687f50a16aba6837f5967a54
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 0.9971

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/406889139/free-card-link-coin-master-game-hack PDF link annotation
    • http://manfeld.dk/images/robux-scam_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-no-generator_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-now_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-latest-version-hack_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/robux-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://manfeld.dk/images/haktuts-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/roblox-free-pets_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/free-coin-and-spin-for-coin-master_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-hack-into-someones-roblox-account_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/coin-master-hack-pro-gamers_GM406889139.pdfIn PDF document text
    • http://manfeld.dk/images/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-free-robux-hack_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://manfeld.dk/images/roblox-skin-free_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_003_off00004689.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4689 24056 bytes
SHA-256: 690d65ecd0e9848931d52245cc4b164b11a8d85ad68e8a832681be2a46223bca
font_01_sfnt_off00007d84.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D84 18056 bytes
SHA-256: cfb6ded867a7642321d4c76c2efd56b2991136bc968f29bb898a65be3c453579

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