Malicious PDF — malware analysis report

Static analysis result for SHA-256 9e712ad6fef52648…

MALICIOUS

PDF

34.5 KB Created: 2021-07-04 13:02:58 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: d3425aac6f3fdf371f21c8d31f4fe75c SHA-1: bc0f7db22944765b863def9de613121b746ab267 SHA-256: 9e712ad6fef526480a1a93ae34ca568feedc7f1338307d0dae7c5c4768ee1d5d
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded URLs, with a primary focus on 'game hack' lures. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates a social engineering tactic to trick users into visiting malicious sites. The ML classifier also flagged the PDF as malicious with high confidence. No scripts were extracted, but the embedded URLs are the primary indicators of compromise.

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/479516143/minecraft-kill-aura-game-hack PDF link annotation
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/how-do-load-hacks-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/coin-master-hack-app-download-free_GM406889139.pdfIn PDF document text
    • http://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/roblox-undertale-monster-mania-how-to-get-reset-2-free_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/apps-for-free-robux_GM431946152.pdfIn PDF document text
    • http://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/free-songs-for-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/coin-master-hack-facebook_GM406889139.pdfIn PDF document text
    • http://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/hacker-roblox-fr_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/coin-master-daily-free-spins-blogspot_GM406889139.pdfIn PDF document text
    • http://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/roblox-hack-codes-2021_GM431946152.pdfIn PDF document text
    • http://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/escape-room-roblox-cheats-enchanted-forest-secret-password_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/roblox-robux-hack-2021-pc_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/coin-master-free-spins-cheat-deutsch_GM406889139.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/cheat-codes-for-roblox-free-robux-pc_GM431946152.pdfIn PDF document text
    • http://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/free-robux-codes-no-human-verification_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/coin-master-money-hack_GM406889139.pdfIn PDF document text
    • http://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/speed-cheat-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/coin-master-free-spin-and-coins-links-home_GM406889139.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/roblox-free-robux-and-tix-hack_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/free-sprite-shirt-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.manurulkhoir.sch.id/__statics/gudangsoal/files/free-robux-without-verification-2021-april_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_off000032ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x32EF 22600 bytes
SHA-256: 1fa5d93e00c073e2d875b2bc727b2fa1ca4d81e13e5491f64dbc8ab8ff0563e8
font_01_sfnt_off000064f7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64F7 18072 bytes
SHA-256: 4103c7d9fc11388aca665cdc644ef37cc482c880eab919eb5102c840a242c823

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