Malicious PDF — malware analysis report

Static analysis result for SHA-256 3253cb5112996b39…

MALICIOUS

PDF

46.0 KB Created: 2021-06-03 10:14:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: a87b5460cef8176defd5d126723e1ce3 SHA-1: f2de5d808ce978844c8d1881d573c109ba431c03 SHA-256: 3253cb5112996b39113ab92eb08ee10e55dd07ec6ec50b9239ba39b4305469df
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure related to game hacks and free spins, directing users to a suspicious URL. The ML classifier also flagged this PDF as malicious. While no scripts were explicitly extracted, the presence of embedded URIs and the nature of the lure suggest an attempt to redirect users to a malicious site, likely for credential harvesting or further malware delivery.

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/406889139/coin-master-free-spin-and-coins-links-game-hack PDF link annotation
    • http://library.stikessuakainsan.ac.id/repository/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-no-verify-2021_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/get-free-spins-on-coin-master-no-human-verification_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/coin-master-hack-mod-apk-2021_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-free-spins-today-new_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-robux-hack-2021-july_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/how-do-you-get-free-robux-without-doing-anything_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-coin-master-spins-no-verification_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/free-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id//repository/how-to-get-robux-on-phone_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/coin-master-70-spin-link_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/roblox-piano-hack_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-can-i-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/huskybuckscom-free-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/how-do-i-get-robux_GM431946152.pdfIn PDF document text
    • http://library.stikessuakainsan.ac.id/repository/free-magical-chest-coin-master_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_off00005188.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x5188 28016 bytes
SHA-256: 17964684715f07a4851be02f5bcf1a878b9fd5b39a1f13bf6a38ee929817f7d6
font_01_sfnt_off00009178.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9178 18228 bytes
SHA-256: ab1c4cdc214a6baf81a15e2f62a40ea9cfbbbf407f0f3dd1c7564e467cf0dae2

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