Malicious PDF — malware analysis report

Static analysis result for SHA-256 8d6ad435185d6871…

MALICIOUS

PDF

24.5 KB Created: 2021-06-19 10:00:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-01
MD5: 96c1d0ce6f0b02f5071b13fee3416778 SHA-1: bb92a0d492458101599c0010cbb034f0ca050e86 SHA-256: 8d6ad435185d6871855b19ae72f9b8fc5e63d003bda4bc54d4eab6086d71bb05
114 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

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. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9984

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.
  • 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
  • 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/how-to-hack-stuff-in-roblox-youtube-game-hack PDF link annotation
    • http://library.umuslim.ac.id//repository/hack-coin-master-no-verification_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-roblox-clothes-from-stores_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/i-finally-found-a-game-that-gives-free-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-minecraft-mods_GM479516143.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/coin-master-free-spins-link-2021-twitter_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/add-robux_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/how-to-hack-roblox-accounts-passwords_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-without-verification-or-survey_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-gold-cards-link-2021ee-spins_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/images-of-jhon-do-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/fre-vip-server-roblox_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/free-coins-and-spins-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spins-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id//repository/how-often-pubg-uc-benefits-paid_GM1330123889.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-spin-link-coin-master-today_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robux-com_GM431946152.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-link-daily-get-free-spins-amp_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/coin-master-free-spin-reward-links_GM406889139.pdfIn PDF document text
    • http://library.umuslim.ac.id/repository/free-robuxs-by-bananaman2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000031bb.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31BB 23004 bytes
SHA-256: 479f15029fe7e95b1210f7f45f570026c6aff306dccba6272405e0ae4eac9653

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