Malicious PDF — malware analysis report

Static analysis result for SHA-256 ea6ec9c5e382d055…

MALICIOUS

PDF

43.6 KB Created: 2021-06-04 03:34:17 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 95b93dd451f4f0aa85e36b6a7e889de9 SHA-1: 1854558b5beb0af9c1f0380e424b46b9857e312d SHA-256: ea6ec9c5e382d055135b18cd2def873d8a750e9ca577231087d727a2cb7cf65b
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high-confidence heuristic indicating it links to a game hack generator, a common lure for malicious downloads. The document body, though heavily obfuscated, contains a URL that aligns with this lure. The presence of a 'download button' heuristic further supports the attack pattern of tricking users into clicking a malicious link.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9865

Heuristics 5

  • 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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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.online/app/406889139/coin-master-pc-game-free-download-game-hack PDF link annotation
    • http://library.ulb.ac.id//repository/haktuts-coin-master-free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-attack-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-minecraft-account-and-password_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-free-robux-fast_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/how-to-get-a-lot-of-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/install-free-game-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/mcpe-master-coins-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-redeem-code-free-2021_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/extra-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/play-minecraft-online-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/minecraft-items_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-roblox-gift-card-codes-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-generator-no-verification-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/rich-free-roblox-accounts_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-hack-apk-35-8_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/pokemon-go-free-808_GM1094591345.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-printable-minecraft-coloring-pages_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-cape-catalog_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_off00004ed6.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4ED6 24464 bytes
SHA-256: 0451166423e3f01540f62f8cedc76a97f8b2545887aaf9070fd0c6205f2c9895
font_01_sfnt_off000086a8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x86A8 18704 bytes
SHA-256: 8ce66c65e478767476711e8a187d609ec807e2903d8f7500c3ed78d36e0717ab

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