Malicious PDF — malware analysis report

Static analysis result for SHA-256 f373fec7d7558796…

MALICIOUS

PDF

34.3 KB Created: 2021-06-19 00:57:52 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 9f3f7de7dd7362b4b6d4419956aa67e2 SHA-1: 13f2fc6948b779301a59b5968299ddf088f4837a SHA-256: f373fec7d755879697b476700d14728f425f48e7f2fc7d97fb68eda8c877e48b
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/casper-roblox-hack-game-hack PDF link annotation
    • http://opac.akafarma-aceh.ac.id/repository/cheat-engine-roblox-tycoon_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-counter-for-roblox-apk_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/minecraft-servers-that-allow-hacks_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/pubg-uc-18_GM1330123889.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-generator-no-survey-no-download-no-human-verification_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/pokemon-go-free-apk-download_GM1094591345.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-hack-no-survey-no-download-no-password_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-coin-master-s_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-hack-m-coins-mcpe-master_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/google-how-do-you-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/hacks-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-root_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-shard-seekers-hack_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/coin-master-hack-spins-game-download_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/wahoogaming-co-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-robux-hack-no-download-no-survey-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/robux-giver-download-free_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/blogspot-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/play-roblox-for-free-on-google_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
font_00_sfnt_off0000306e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x306E 22072 bytes
SHA-256: 1eb0a02357c951b1cdd0a0b92c71c953011f8cfd9f15a00816dda4c489a072ee
font_01_sfnt_off0000615c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x615C 18832 bytes
SHA-256: 0e731ef57566310e1fbf37c22e902757e882c1330cc8b3469a9f6d4e348a8597

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