Malicious PDF — malware analysis report

Static analysis result for SHA-256 f5830569f0d33386…

MALICIOUS

PDF

34.2 KB Created: 2021-06-29 01:28:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 6b4aeba7b7e25b694535197e7406e3c3 SHA-1: 116e9dc9c8b2ed1efe733a71fa9ab68b33e0d5fc SHA-256: f5830569f0d33386748e45f1cf99a3ab4846f17bfe386de7b35b97312ede6167
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 0.9980

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 http://netcdn.co/app/431946152/hoe-to-het-free-robux-game-hack PDF link annotation
    • https://lib.bunghatta.ac.id/app/repository/free-robux-generator-no-survey_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-exploits-2021-not-blocked-by-antivirus_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-gewt-free-robux-on-a-ipad_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-spins-and-coins-unlimited-free-download_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/a-wolf-or-other-roblox-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-activegamer_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/hack-roblox-for-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-arsenal-hack_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-free-logins_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-roblox-items-for-1m-instagram-followers_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/free-code-robux-2021-auguste_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/how-to-get-free-minecraft-coins_GM479516143.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/a-pirates-tale-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/i-hacked-the-roblox-app_GM431946152.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/apk-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://lib.bunghatta.ac.id/app/repository/roblox-hack-btools-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00002f43.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2F43 22384 bytes
SHA-256: b36d4fdf93a2f5df1d303e32ec67010e7dfb77dea6f4432fb98b012dbc5c9fda
font_01_sfnt_off00006129.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6129 18820 bytes
SHA-256: 5984dda6f2378e4530fdb452b5b753136be604b7b0488f13e8a3f647eb2c138a

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