Malicious PDF — malware analysis report

Static analysis result for SHA-256 2771946b149c4c0a…

MALICIOUS

PDF

43.1 KB Created: 2021-05-16 08:33:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: cfab209f08d48ce398e6b9b6662a5769 SHA-1: 0833a647fdd2738dc31cf0037c2a869520bac98c SHA-256: 2771946b149c4c0a1d6f152cc4ed0441c2cad4673d1d94b0bd3aaf49f6d4c1a4
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-spins-coin-master-2021-app-game-hack PDF link annotation
    • https://amenergy.vn/public/upload/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/master-free-spin-and-coin-link_GM406889139.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/free-robux-gift-card-codes_GM431946152.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/minecraft-pe_GM479516143.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/free-coin-master-spin-generator_GM406889139.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/make-free-robux_GM431946152.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/minecraft-java-edition-free-download-for-android_GM479516143.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/minecraft-wurst-hacked-client_GM479516143.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/coin-master-hack-without-verification-site-zyngaplayerforumscom_GM406889139.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/hack-coin-master-android-game_GM406889139.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/minecraft-menu_GM479516143.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/rbx-free_GM431946152.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/minecraft-pe-free-download-ios_GM479516143.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/free-robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • https://amenergy.vn/public/upload/files/coin-master-free-attack_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004850.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4850 28164 bytes
SHA-256: 19314bb8bdbf48cccae31135a5da9a4ce9967b05bc39bbef29ce2612b375d25e
font_01_sfnt_off00008606.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8606 18288 bytes
SHA-256: 6b6cd7167012eeb1812e943ff49937c2219a320edcaba7462c006fdd54a5786c

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