Malicious PDF — malware analysis report

Static analysis result for SHA-256 5eb52d2ceff72fcc…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 12:29:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-04
MD5: 8121c5e02b447d21e1f4cdc342fdcd11 SHA-1: d4fe198baaf5b680f951076cdf79d90f7fed5429 SHA-256: 5eb52d2ceff72fccaff8ba31f349d06ff6da87b39e76ef6874e2565cf35fcf1f
122 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious Link

This PDF document was flagged as malicious by an ML classifier. It uses a password-protected-archive 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 0.9980

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.
  • Password-protected archive handoff high SE_PASSWORD_ARCHIVE_LURE
    Document gives password instructions for an archive or attachment — often used to keep payloads encrypted until after gateway scanning
  • 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-microsoft-rewards-game-hack PDF link annotation
    • http://library.itekes-bali.ac.id/repository/minecraft-font-free_GM479516143.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-accounts-with-bloz_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-ad_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-hack-no-survey-no-password-no-virus_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-shirt-maker-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/jojo-roblox-items-free_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-free-spins-and-coins-2021_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-robux-2021-android_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-gift-card-codes-list_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/www-roblox-cheatus-limited-amount-2021_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/i-got-hacked-and-cant-play-games-now-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/roblox-high-school-life-free-steff_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-headless-head-roblox_GM431946152.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/fb-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-google-play-promo-codes-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/daily-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/coin-master-heaven-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://library.itekes-bali.ac.id/repository/free-roblox-cads_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_off00002f71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F71 21904 bytes
SHA-256: c66b43a47ef82bf235c1ae2b0f1daf4c1cde307ab360e0dc83332849751cc865
font_01_sfnt_off00005ffc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFC 19244 bytes
SHA-256: f8bb3a80441ad8ed23a4594754ddb52409a0eb1a5dd42708402faee16d247a69

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