Malicious PDF — malware analysis report

Static analysis result for SHA-256 eae5a352a6070234…

MALICIOUS

PDF

46.8 KB Created: 2021-05-10 23:36:33 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 431c81dcd6ca4b1f3d52f424f5b6591e SHA-1: e17321e05bbd36f8a5aac94b5da9f1001ba8ddab SHA-256: eae5a352a607023470081402df6b7a7526c9b098db58252aecb24a3d96fe7e01
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free spins to entice users. It contains multiple embedded URLs, including one pointing to a suspicious domain, which likely serve as redirects to malicious content or phishing pages. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.8948

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/free-spins-coin-master-links-blogspot-game-hack PDF link annotation
    • http://stikespantirapih.ac.id/home/repository/free-coin-master-spins-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-coin-spin-daily-link-for-coin-master-game_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/websites-for-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/minecraft-skins-free-girl_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-studio-free-download_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/huskybuscom-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/daily-free-spins-coin-master-app_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spin-daily-link_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/rbxoffer-com-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/coin-master-free-spins-link-facebook_GM406889139.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-gfx-roblox_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-you-get-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/bloxpink-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/how-do-you-get-free-roblox-money_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/roblox-studio-free-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/free-robux-obby-2021_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/robloxfun-com-robux_GM431946152.pdfIn PDF document text
    • http://stikespantirapih.ac.id/home/repository/is-minecraft-free-on-mac_GM479516143.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_off00004c6d.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4C6D 25512 bytes
SHA-256: a6ff0d3eaef33644d0a7440bc2fc86aa17059f4b02e0511bad1833c46d1fc4dc
font_01_sfnt_off0000882f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x882F 3400 bytes
SHA-256: 4b3e0f36ad1e0c7e3ea5c178fd2b4f097d1e01575fc6a4101a8b520db34dfe07
font_02_sfnt_off00009358.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9358 18632 bytes
SHA-256: e19cb03e4db5dc0ff2825ab1b6cd29120edbbac4e5fd870bab1836bcb421f615

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