Malicious PDF — malware analysis report

Static analysis result for SHA-256 c143e04dc05bc1a5…

MALICIOUS

PDF

49.6 KB Created: 2021-05-13 03:10:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: cba28855bd20df2b20d25e9120574097 SHA-1: 902103ab2567a10213618d271b7477fd181a6684 SHA-256: c143e04dc05bc1a5c6c47856cafde6db341a6814c700582f7350cda121d3c537
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 0.8642

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/406889139/daily-free-spin-coin-master-link-game-hack PDF link annotation
    • http://gts.edu.gh/library/repository/free-spin-and-daily-news-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/aternos-free-minecraft-server_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/roblox-free-robux-no-human-verification_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-verification-2021-android_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/how-to-get-free-spins-in-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/websites-that-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-link-download-free_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-no-verification-no-download-2021_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/hack-coin-master-343-apk_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/what-is-a-minecraft-client_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-spins-and-coins-daily-links_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-game-hack-kaise-kare_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-minecraft-skin-packs_GM479516143.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/unlimited-robux_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-cheats-2021_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/free-robux-generator-com-roblox-hack_GM431946152.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/300-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • http://gts.edu.gh/library/repository/all-links-for-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004dc1.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DC1 24928 bytes
SHA-256: 1783a240d0299455ae824d10552cb2de65e8f2927bcf0069e37bbf31988e7a7b
font_01_sfnt_off00008711.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8711 4092 bytes
SHA-256: 5f209d2de47fc1d1daa3f7a159899a6156681217a4da0d2c4432eb95998bf980
font_02_sfnt_off000094e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x94E8 2788 bytes
SHA-256: 6fd7c7f447d66842f81aa8cf197935b17f22157d0c7e9f95622df1b5b4ddf530
font_03_sfnt_off00009ed7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9ED7 18476 bytes
SHA-256: 13087f23ced5a654764a402ace47e06b7ceeb886891228a443e0cb07dd9c4176

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