Malicious PDF — malware analysis report

Static analysis result for SHA-256 79b73f1a103d9064…

MALICIOUS

PDF

44.4 KB Created: 2021-05-10 13:42:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: e8e9ecefc68904c99d27f5d3ace14e3d SHA-1: d05ba0575f114bfffb6a912b27193fd55253d795 SHA-256: 79b73f1a103d9064547509a8b348b49e88c5d69719bd5fe394c0dc3856d0d2cc
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for a game hack, directing users to a URL that is flagged as malicious. The presence of multiple game-related URLs suggests a phishing or scam attempt to trick users into visiting potentially harmful sites. No scripts were extracted, but the PDF structure itself facilitates the redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/how-to-get-free-coins-in-coin-master-game-hack PDF link annotation
    • http://perpus.stihpada.ac.id/repository/google-roblox-games_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-get-more-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-robux-promo-codes-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-hacked-version_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-roblox-followers_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-cards-free_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/robux-com-roblox_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/descargar-coin-master-hackeado_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/how-to-get-free-robux-2021-easy_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-free-spins-fb_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-hack-no-verification-2021_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/free-coin-master-cards-link_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/get-robux-now_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/coin-master-33-hack-version-download_GM406889139.pdfIn PDF document text
    • http://perpus.stihpada.ac.id/repository/roblox-account-taker_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_off000046f1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x46F1 25992 bytes
SHA-256: aac3c1422ddfa178c62218906a0b8aeaf0783ca20be7a84f06cdb2293a0fe26d
font_01_sfnt_off00008265.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8265 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008c16.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8C16 17872 bytes
SHA-256: ea6dcb3ab890178a05547e3161835c8edeffae3732ad32b35eba99407f3e1bd5

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