Malicious PDF — malware analysis report

Static analysis result for SHA-256 1b07824dcecd449e…

MALICIOUS

PDF

35.1 KB Created: 2021-07-03 14:55:29 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 4df6f9ad1da6e232620b1729e92faf8e SHA-1: 4ca9ce5b89875cafbd1b3d1546b74f492ac4d8ee SHA-256: 1b07824dcecd449e66e58a791dbcccbf531ca9471a68aef288290ff6cfa4ebfc
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.tw/app/431946152/roblox-promo-codes-free-robux-game-hack PDF link annotation
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-free-spins-gratis_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-change-username-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-robux-without-doing-anything-2021_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-spin-link-free_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-get-free-robux-without-verification-or-surveys_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-robux-2021-no-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-robux-with-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-spins-on-coin-master-hack_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-robux-kid-friendly_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/coin-master-daily-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/tiktok-free-followers-hack_GM835599320.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/wwwroblox-hacksites_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/free-spins-coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/comment-avoir-des-robux-gratuit-2021-sans-hack_GM431946152.pdfIn PDF document text
    • https://elearning.mialirsyadkotakediri.com/__statics/gudangsoal/files/how-to-cheat-in-roblox-lifting-simulator_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_off00003134.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3134 22532 bytes
SHA-256: e231f57e3064434efb48d05c2b6f0d55dd4e1f7bd300d2e7a5bc9ea40faacb86
font_01_sfnt_off00006360.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6360 19380 bytes
SHA-256: f599988ad614928277529a5070f43d57f30efd84bc389ab6e612c4c8b358aa39

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