Malicious PDF — malware analysis report

Static analysis result for SHA-256 976d9b1cdb118ec4…

MALICIOUS

PDF

43.2 KB Created: 2021-05-13 20:34:40 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 453cf288639c24583444511cb9122848 SHA-1: 9eadac298d796b1314878564f5f302c641633106 SHA-256: 976d9b1cdb118ec4bdcb5026b39cf0a8cf550bf72f4623f71f2ca78028f982ac
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs that redirect to pages offering game hacks and free currency, a common lure for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. Although no scripts were explicitly extracted, the presence of embedded URLs and the nature of the lure suggest the document is designed to lead the user to a malicious site, likely for credential harvesting or further payload delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/como-hackear-coin-master-2021-espaol-game-hack PDF link annotation
    • http://tckontrola.hr/files/hack-coin-master-apk-32-download_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/apps-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-spins-free-2021_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/how-do-i-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/what-is-robux-in-roblox_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-free-spins-2021-link_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-shirt-template-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-get-free-robux-easy_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/free-roblox-generator_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/cm-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/roblox-free-pants_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/free-minecraft-java-server_GM479516143.pdfIn PDF document text
    • http://tckontrola.hr/files/free-minecraft-skins-xbox-one_GM479516143.pdfIn PDF document text
    • http://tckontrola.hr/files/how-to-hack-robux_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_003_off0000477c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x477C 26936 bytes
SHA-256: 84741dd27b8b611b229602b8f7c9a0d52adce48029b01f528ed1c897fd1e3dac
font_01_sfnt_off000085a9.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85A9 18628 bytes
SHA-256: 51d0c26a7700976d4b9729d2086435caf3cf2216ab56e6e35ff28649202ea5db

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