Malicious PDF — malware analysis report

Static analysis result for SHA-256 a036111a5fa91ce8…

MALICIOUS

PDF

44.4 KB Created: 2021-06-03 22:41:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 2ab70a98d3c031a3d729954b5fb8cc11 SHA-1: 638e7506fd03cee6949b92f6565d440a7f40baa7 SHA-256: a036111a5fa91ce8067c1f611df0bda41c41b7424bef904b87d018967a246158
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 0.9865

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.online/app/406889139/coin-master-daily-free-spin-and-coin-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-devil_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/robuxmatch-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/will-minecraft-dungeons-be-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-link-today-hack_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-link-today-new-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-glitch_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-sign-in-free_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-login-free_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/earn-robux-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-roblox-dominus_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-free-spins-hack-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-codes-no-verification_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-how-to-get-free-pet-food_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-for-coin-master-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-unlimited-spins-and-coins-cheats_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_004_off00005065.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5065 25036 bytes
SHA-256: 930756c75b17519cd01406b7b77dc0601d49640609f2a5add48ade0788d6b1c5
font_01_sfnt_off00008a4c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A4C 18480 bytes
SHA-256: 323fea871d3154f9ddf991b22fd859b77165b4ee4e2d03de0fe4666202988bbb

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