Malicious PDF — malware analysis report

Static analysis result for SHA-256 eff051f7a5e70dd3…

MALICIOUS

PDF

42.5 KB Created: 2021-05-11 23:35:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: a857e3a178334e20289f353c318d44a7 SHA-1: ab13d55b39e3ee50943ea7cefc6bc08475837df6 SHA-256: eff051f7a5e70dd36bf06c5fb9e839bdbba708f0b4a18401277820c30408b422
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/479516143/how-to-add-mods-to-minecraft-pe-game-hack PDF link annotation
    • http://ratchadatitan.com/UserFiles/File/roblox-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-robux-real_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-attack-madness-hack_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/how-to-get-free-robux-no-human-verification-2021_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-game-pack-with-google-play-coin-master_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-robux-no-verification-no-download_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-coins-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/robux-hacks-2021_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-robux-without-verification_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/minecraft-java-free_GM479516143.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/how-to-hack-a-minecraft-server-and-make-yourself-op_GM479516143.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/free-coin-master-app_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-unlimited-spin-hack_GM406889139.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/roblox-website-robux_GM431946152.pdfIn PDF document text
    • http://ratchadatitan.com/UserFiles/File/coin-master-hack-2021_GM406889139.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_off00004bc2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BC2 24820 bytes
SHA-256: 169e390958cc9d5b616b697b1aaa6ca84004e38d1a9df096a36712f7dc989eb1
font_01_sfnt_off0000842c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x842C 18200 bytes
SHA-256: 3ccb4a0c8d8dd3a39612d5aadb8a83adb34010b200ffff10234a27dde113b5e3

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