Malicious PDF — malware analysis report

Static analysis result for SHA-256 96353727aaa01fb6…

MALICIOUS

PDF

45.8 KB Created: 2021-06-03 13:38:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 4e2d2b49381d00a605fbe6b6a9b94df2 SHA-1: 4547a951078f6648a30d4c8735a7f5f79048ed6c SHA-256: 96353727aaa01fb6750a0f50ad260b6a1cdd6e4c9f7da03ef63cccc28aa835b8
142 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. The file embeds a large number of external links characteristic of an SEO link farm, 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 5

  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • 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/como-conseguir-monedas-infinitas-y-tiradas-de-coin-master-hack-game-hack PDF link annotation
    • https://library.uigm.ac.id/repository/free-robux-no-human-verification-and-no-survey_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-promo-codes-for-roblox-items-2021_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-free-spins-and-coins-hack_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-spins-android_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/games-in-roblox-that-give-you-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/roblox-gift-card-free-codes_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-roblox-clothes-and-hair_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-villages_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/earn-robux-com_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-robux-link_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-hack-version-download-2021-ios_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-games-like-roblox_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/how-to-change-roblox-name-for-free_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-free-ios_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-links-to-get-free-spins_GM406889139.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/minecraft-windows-10-free-with-java_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/easy-way-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/free-modded-minecraft-server_GM479516143.pdfIn PDF document text
    • https://library.uigm.ac.id/repository/coin-master-ad_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_off000054b9.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x54B9 26412 bytes
SHA-256: aa7d8929a82b4c698eff83c82b5e6ee0b15308533b63ee0e5e087948b7e8fb90
font_01_sfnt_off00008e94.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E94 18908 bytes
SHA-256: 22eea22e93e3a2ab8e7a2e6bfe46b3c4bbbdffc0ed3854b3ba75aeac54633c45

Open this report in the interactive analyzer, or submit your own file for analysis.