Malicious PDF — malware analysis report

Static analysis result for SHA-256 535557ee70c81140…

MALICIOUS

PDF

34.7 KB Created: 2021-06-25 06:57:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3918a2e52c27c706347232b34961ccc1 SHA-1: 0f4f7494832e84064d5c0af0064cdcd7249678e9 SHA-256: 535557ee70c811407a33792dc6ea80bef673d9061e60e11d39c36e690e1bf790
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a game hack lure, specifically mentioning 'Cheats For Roblox Jailbreak 2021', to entice users. It contains numerous embedded URLs, with the primary one being http://netcdn.co/app/431946152/cheats-for-roblox-jailbreak-2021-game-hack, which likely leads to a malicious download or phishing page. The ML classifier also strongly indicated maliciousness.

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/cheats-for-roblox-jailbreak-2021-game-hack PDF link annotation
    • http://perpus.stmik-im.ac.id/repository/coin-master-hacks-reddit_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/how-long-is-the-minecraft-free-trial_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/roblox-army-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/claim-free-robux_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-hacks-no-verification_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/download-coin-master-apk-hack_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-robux-without-verify_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-coins-link-facebook_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/wurst-hacked-client-112-2_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/cheat-roblox-granny_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/toolbox-for-minecraft-pe-mod-apk_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/robux-free-pc_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/pokemon-go-free-mewtwo-hack_GM1094591345.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/minecraft-free-download-windows-10_GM479516143.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-hack-apk-35-13_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/free-spin-and-coin-blogspot_GM406889139.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/rbx-hut_GM431946152.pdfIn PDF document text
    • http://perpus.stmik-im.ac.id/repository/coin-master-free-spins-youthnow_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
font_00_sfnt_off0000303a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x303A 21900 bytes
SHA-256: eabf27333e39cb328f78e2e9df15aeb0065fe0cabca9cec47b73f37914486aa4
font_01_sfnt_off0000608c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x608C 19780 bytes
SHA-256: ba631e834ad94758087a65d057bfd1b261914231d2de1ac2677ae156c11a02bc

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