Malicious PDF — malware analysis report

Static analysis result for SHA-256 767c5b3e0a3778a6…

MALICIOUS

PDF

52.6 KB Created: 2021-06-13 21:04:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 423fa1f9b82e15ab5b5b755aed31b7c6 SHA-1: c52e6152d4879c44d49b7a16fe16bea2ca4c548c SHA-256: 767c5b3e0a3778a6d9f0f9b0b6f7a86bab2baf79cd8f9fd47ed706f55f5cd7ca
90 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. It uses an urgency-based lure. 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 0.9218

Heuristics 5

  • 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.
  • Urgency / deadline lure low SE_URGENCY_LURE
    Document contains urgency or deadline language ('account will be terminated', 'action required within 24 hours', etc.) — useful context, but low-signal without other findings
  • 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/auto-click-on-roblox-hack-game-hack PDF link annotation
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-hack-peoples-account-on-roblox-2021_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-roblox-accounts-2021-january_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-get-any-free-robux-item_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/force-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/hack-robux-gratis-pastebin_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-hack-roblox-pizza-place_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-get-free-robux-on-computer-no-inspect_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/level-6-hack-roblox_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-do-you-play-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-roblox-music-id_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-tiktok-followers-no-human-verification-or-survey-2021_GM835599320.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/coin-master-daily-free-spins-link-today_GM406889139.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/break-free-roblox-id-area_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/cheat-code-sonic-new-map-roblox_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/how-to-get-free-in-roblox_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/freer-pro-tiktok-fans_GM835599320.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/roblox-hack-robux-no-survey-2021_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/hack-para-jailbreak-roblox-dinero-infinito_GM431946152.pdfIn PDF document text
    • https://www.colgr.com/wp-content/uploads/fsqm-files/free-builders-club-roblox-script_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004e4b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4E4B 28432 bytes
SHA-256: 3781cd368f5006375cdf2e6efdc73028af7830274c14f20b8654a3f2d893d1e2
font_01_sfnt_off00008d95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D95 9020 bytes
SHA-256: efa7b24965c174efb6391ce055964f8da621de1cfc5756de6d1fd9407b56b999
font_02_sfnt_off0000ab04.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xAB04 18544 bytes
SHA-256: aa3c130321057d6e24fde150cbf2f11eaa6799b431553211e3c6d259b570ddfd

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