Malicious PDF — malware analysis report

Static analysis result for SHA-256 400f7225a24c9ec6…

MALICIOUS

PDF

34.8 KB Created: 2021-07-05 16:33:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 68e30b7b192fae42454007b0f7feca41 SHA-1: d92a54bde785be2911a23916f624421924e146ef SHA-256: 400f7225a24c9ec672dc3cbe4395715f28abdd7e5770c75077f5ff7d4c7ee44e
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/bloxy-awards-free-robux-game-hack PDF link annotation
    • http://librarystkippgribl.com//repository/free-coin-master-spins-2021-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/hack-card-collection-coin-master_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-stars_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/minecraft-windows-10-mod-menu_GM479516143.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-free-in-app-purchases-jailbreak_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/rbx-roblox-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/freespincoin-masterlinkdownload_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/how-to-make-free-robux_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/freerobuxhack-us-2021_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/roblox-egg-farm-simulator-comment-obtenir-des-oeufs-noirs-cheat_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/how-to-win-attack-madness-in-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-tiktok-foryoupage_GM835599320.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/free-robux-legit_GM431946152.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/coin-master-daily-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com//repository/coin-master-free-redeem-code_GM406889139.pdfIn PDF document text
    • http://librarystkippgribl.com/repository/pubg-2021-uc_GM1330123889.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_off0000313f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x313F 22176 bytes
SHA-256: 4f413fca741a57912d2f79bd6d0317978479ea709a40355aaaecb38544f1e810
font_01_sfnt_off00006236.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6236 19308 bytes
SHA-256: 2f427a57d9e751631b42ea48206f857cb00d26ea764d79462b765ebee04c283b

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