Malicious PDF — malware analysis report

Static analysis result for SHA-256 3a76320442105c2b…

MALICIOUS

PDF

42.6 KB Created: 2021-06-03 10:59:13 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: cddfda03869d803865b2160752f64c98 SHA-1: aa28ec417d08d66fcda7915a2fd20d0d0b679fe5 SHA-256: 3a76320442105c2bf071373aa91d42f0ff851a7a136e7027062690b37dcf0df2
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

The PDF contains a high-severity heuristic firing for a game hack redirect lure, pointing to a specific URL. The document body, though partially corrupted, also contains this URL and mentions 'Tiktok Free Pro App Download', reinforcing the lure. The ML classifier also flagged this PDF as malicious with high confidence.

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/835599320/tiktok-free-pro-app-download-game-hack PDF link annotation
    • http://library.umla.ac.id/repository/wurst-hacks_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/how-to-earn-free-pokeballs-in-pokemon-go_GM1094591345.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-free-accessories_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/pubg-uc-shop_GM1330123889.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-meme_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/hacks-master-coin_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-free-app_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id/repository/roblox-fun-com-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-robux-that-actually-works-2021_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id/repository/jailbreak-script_GM431946152.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-free-spins-fb-champion_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/minecraft-free-online_GM479516143.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-tricks_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-link-2021-today_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-cheats_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-link-2021-haktuts_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id//repository/coin-master-links-for-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://library.umla.ac.id/repository/coin-master-free-spins-2021_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_off00004d91.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4D91 23540 bytes
SHA-256: a0ffec002f76bc1c90ad807c2ac7f9ce78a7191642f58edbcfc734ed23375b00
font_01_sfnt_off000082fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82FA 18596 bytes
SHA-256: 594b867faa086d4fbe0696004d1c42e862af276191dc47a5443004e564b9ceeb

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