Malicious PDF — malware analysis report

Static analysis result for SHA-256 feba0f35d9908b1b…

MALICIOUS

PDF

45.6 KB Created: 2021-06-03 23:19:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 7d3ce1add4549b2d8704f492d4df8fa8 SHA-1: 91a09bdc13d92970cf03dda86288f24674b50ed4 SHA-256: feba0f35d9908b1bcb0c7a159030543b282b705e9f4531579420808deacbfbd5
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 0.9864

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/479516143/best-hacked-client-game-hack PDF link annotation
    • http://pustaka.stikesperintis.ac.id/repository/free-spins-and-coins-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-gifts_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-shirt-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-spins-link-today_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-games_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/best-minecraft-hacked-client_GM479516143.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/hack-coin-master-for-iphone_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-lucky-patcher-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-hack-link-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-event-hack_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-free-coins-2021_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/robux-hack-no-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/how-to-get-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/100-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/get-free-cards-for-coin-master_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/coin-master-hack-injection_GM406889139.pdfIn PDF document text
    • http://pustaka.stikesperintis.ac.id/repository/pixies-gigantic-coin-master-free-spins-and-coins_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_off0000516d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x516D 27692 bytes
SHA-256: 494f497a90aee32617f2ebd7c133584a91946a97c6ba85a3f27cc9f8cb0eb53d
font_01_sfnt_off00009007.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9007 18200 bytes
SHA-256: 433705e2a5b000201a89731af92cc6a86737b8d7ef1f7f9bc153edc0cbe11e57

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