Malicious PDF — malware analysis report

Static analysis result for SHA-256 c58476be0a68c862…

MALICIOUS

PDF

34.5 KB Created: 2021-07-01 15:28:00 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 77821f196bdbfc3ce798b801e7546abb SHA-1: 8daa27c5da8044d2f2f2034dbf3caf75e167eec1 SHA-256: c58476be0a68c862f373310a00475a1548b215cfc16e38ae72df6f1987d7a29b
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game currency and accounts, directing users to a suspicious URL. The ML classifier strongly indicates maliciousness, and the presence of embedded URLs and a visual download button lure further support this assessment. The document's content and linked URLs suggest a phishing or scam attempt designed to trick users into visiting malicious sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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 http://netcdn.co/app/431946152/free-new-roblox-accounts-game-hack PDF link annotation
    • http://library.patria-artha.ac.id/repository/free-face-codes-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-free-robux-any-time_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/how-to-get-a-lot-of-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-adopt-me-free-vbucks_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-hack-999999-robux-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/no-human-verification-hack-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-coin-master-app-iphone_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-coin-link-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/spin-coin-master-free_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/minecraft-pocket-edition-free-download_GM479516143.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/free-robux-no-apps_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/aimbot-download-roblox_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/roblox-hacks-and-cheats_GM431946152.pdfIn PDF document text
    • http://library.patria-artha.ac.id/repository/cheat-codes-feels-great-roblox-id_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
font_00_sfnt_off00002f3a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F3A 22576 bytes
SHA-256: 649527e7b94b58b69a0cd251390c2e24455f35e64d7bb34fbe556084fef1495b
font_01_sfnt_off000061c0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x61C0 19056 bytes
SHA-256: 9f70129ab7799d7744814754df037be6d1b122ba30c95c0f66d367263d8d90a3

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