Malicious PDF — malware analysis report

Static analysis result for SHA-256 e7bc308e64c68b68…

MALICIOUS

PDF

41.6 KB Created: 2021-04-26 03:47:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 0eabb4135f4a2b60bff5da6fae82eeff SHA-1: 9f72501317d01aea060e8b46119db4bd38ec67d3 SHA-256: e7bc308e64c68b68d7769b60de44195988d0fa3329d4c9535e9a45b13b0c25cb
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 0.9941

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/431946152/how-to-hack-unblock-roblox-password-on-computer-game-hack PDF link annotation
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/roblox-mechacubes-hack.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/how-to-get-girl-hair-on-roblox-for-free.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/easy-roblox-today-hack.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/10-million-free-robux.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/reaper-quest-cheats-engine-roblox.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/free-robux-codes-live-youtube.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/roblox-parkour-bag-hack.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/my-roblox-account-got-hacked.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/hoot-join-a-roblox-group-for-free.pdfIn PDF document text
    • http://e-learning20.min2pontianak.sch.id/__statics/gudangsoal/files/vuxvux-free-robux.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_003_off00004356.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4356 25684 bytes
SHA-256: f6c0fee5b2a8acd19666efaacd236b9e55f09115164d401c8a9a1b2cfd754660
font_01_sfnt_off00007d1b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7D1B 19540 bytes
SHA-256: 5829eb97aff47715ffa340f449c984fc8b66c1f5198900ffb69d0e58f2cd284b

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