Malicious PDF — malware analysis report

Static analysis result for SHA-256 4f2f832faa4c12be…

MALICIOUS

PDF

44.6 KB Created: 2021-06-04 04:23:48 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-05
MD5: cca97653c9d2f9ecad5b320da23e0617 SHA-1: 2223a42a318632a64a8c680629d8d4d7ff5de325 SHA-256: 4f2f832faa4c12be51530c8007a53adc8e35862995f264ad9a7fa3d6bb060031
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 0.9865

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-spins-link-download-game-hack PDF link annotation
    • http://opac.disarpus.surakarta.go.id/repository/free-minecraft-skins-pe_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-accounts-for-sale-free_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/cheats-for-coin-master_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/tiktok-views-free-2021_GM835599320.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-roblox-usernames-and-passwords_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/roblox-free-exploits_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/minecraft-hacks-wurst_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/20210-robux_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/how-to-hack-roblox-accounts-2021-easy_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-hack-xyz_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-appsfor-coin-master-daily-rewards_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-daily-link_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-no-human-verification-generator_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-minecraft-codes_GM479516143.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-spins-coin-master-blogspot_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/john-doe-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/coin-master-free-spin-and-coin-link-2021-today_GM406889139.pdfIn PDF document text
    • http://opac.disarpus.surakarta.go.id/repository/free-robux-gen_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_off00004edf.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4EDF 26468 bytes
SHA-256: 9a31eb94b8c7a92c5da767faffec0c012f070beca242a31d9e48ae5c54d45eaf
font_01_sfnt_off00008a8a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8A8A 18636 bytes
SHA-256: e0ee4d28e9fbd90893640acb023fdb3433a7d18e360fd79b0a1965f7934d0c46

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