Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8e69e4224319c7c…

MALICIOUS

PDF

46.7 KB Created: 2021-05-17 20:51:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: b180ef90a3ef30f1fbc60c49128f8c50 SHA-1: 0bad8c4f08c58c3fe5f280e4dac4c7fd53a4b0a8 SHA-256: e8e69e4224319c7c7e2f7f10f4d6dea1a87bed8f42042076e9d909999fe37c14
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary link to a 'coin-master-hack-spin-generator-tool-game-hack' page. This heuristic firing, combined with the ML classifier, indicates a malicious intent to redirect users to potentially harmful content. The document body, though partially garbled, also contains references to game hacks and generators, reinforcing the lure.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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-hack-spin-generator-tool-game-hack PDF link annotation
    • https://pa-pangkalpinang.go.id/images/coin-master-free-coins-spins_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-get-free-spins-on-coin-master-2021-links_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-2021-app_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/but-link-says-free-robux_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/rbxcity-free-robux_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/minecraft-that-you-can-play-for-free_GM479516143.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/how-to-get-free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/free-hacks-for-coin-master_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/roblox-comroblox_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/roblox-promo-codes-generator-no-human-verification_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/earn-robux-today-earn-robux-today_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/real-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/free-robux-generator-without-verification_GM431946152.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/try-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://pa-pangkalpinang.go.id/images/free-robux-no-survey_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004c4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C4B 27524 bytes
SHA-256: b2455a8779ad6563cc97b80e55d69f9d9d62492c3dabcf920e5275ea0be67d03
font_01_sfnt_off00008a44.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A44 17968 bytes
SHA-256: ea67d54f04c33a937dae932ca1fc44fc221a1b4b4b4a53e5a275faf6159c5a59
font_02_sfnt_off0000ab56.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB56 3264 bytes
SHA-256: e32c06502c11b52acb5e814091c5fdbffd1e2a904ac7a9cfb8b5b180bd139088

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