Malicious PDF — malware analysis report

Static analysis result for SHA-256 d3eb8fa9d0e9d5c9…

MALICIOUS

PDF

45.7 KB Created: 2021-05-15 12:32:20 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: 0097f914fb96266b40d7a0be9aa5a08b SHA-1: fca9b8af83c72b8f6c7fa43f94d0c680d5b11883 SHA-256: d3eb8fa9d0e9d5c97509c70231a02bec3d4b8cf9a978366b5ffea3ec1c28e9e8
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a high-confidence heuristic for a game hack redirect lure, specifically mentioning Coin Master free spins. The document body and embedded URLs reinforce this theme, pointing to external sites that likely host malicious content or phishing pages. While no scripts were directly extracted, the PDF structure itself facilitates the redirection, aligning with common social engineering tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9432

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/coin-master-free-spins-2021-hack-game-hack PDF link annotation
    • http://vavafashions.com/uploaded_files/userfiles/files/coin-master-free-spins-apple_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/free-robux-promo-codes_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/20210-free-spin-links-for-coin-master_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/free-robux-groups-2021_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/coin-master-free-spons-apk-2021_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/hacked-roblox-accounts-list_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/how-to-get-free-robux-fast-and-easy_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/free-spins-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/download-coin-master-apk-hacked_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/free-coin-master-hacks-no-verification_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/free-robux-no-scam_GM431946152.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/coin-master-spin-hack-app_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/hack-mod-coin-master_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/how-to-hack-coin-master-without-root_GM406889139.pdfIn PDF document text
    • http://vavafashions.com/uploaded_files/userfiles/files/minecraft-hacks-pc_GM479516143.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 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b95.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B95 25716 bytes
SHA-256: 295a130f994061b0ac0652e4a4d8fe9d11ce5fba144cd09350222c25b40d3ee2
font_01_sfnt_off000085f9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85F9 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008fab.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8FAB 18456 bytes
SHA-256: 01aac8443e047fcb7357b1b8ecb4a3fbe01c6e1da05f82155595583d2ef12cbf

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