Malicious PDF — malware analysis report

Static analysis result for SHA-256 924232d34cdcdfec…

MALICIOUS

PDF

43.1 KB Created: 2021-06-03 14:08:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 01e9fb17f9907b71ccc16cf28239d783 SHA-1: e0d71958e9f3326f9cfa37de68b53ea959402123 SHA-256: 924232d34cdcdfec5402feb1729cc4432685bb8f5de6f2adc36ee82d1dfef9bf
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 0.9874

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/fbchampion-com-game-hack PDF link annotation
    • http://library.yamasi.ac.id//repository/coin-master-hack-apk-download-for-android_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-followers_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-hack-without-verification_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/roblox-free-skin_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/haktuts-free-spins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-shields-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-real-working_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/hacks-minecraft_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spin-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-coins-coin-master-haktuts_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/is-windows-10-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/10-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/best-free-minecraft-texture-packs_GM479516143.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-heaven-links_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/free-spin-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-free-rewards-link_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/how-to-hack-roblox-accounts-for-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-robux-by-watching-ads_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/websites-to-get-free-robux_GM431946152.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_off00004db2.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DB2 24924 bytes
SHA-256: 46d5f61b158ccded1669cd4a5b36527a76f1becba34158e478f0044198cf6d12
font_01_sfnt_off000085ee.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x85EE 18364 bytes
SHA-256: bf4d3a5aac758f6c252762087d30972ef460d96304da6a0413f0eeb503c51fa6

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