Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bb6734e2d25d41a…

MALICIOUS

PDF

35.0 KB Created: 2021-07-05 11:13:02 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-20
MD5: f39f29e949125594a5086239bd8c5ca3 SHA-1: 629c11fcd997d61740e764324f7ee8545ac4b16a SHA-256: 6bb6734e2d25d41a3ae8999c8dcd2511527c33908fc958720baf9baaa7c71055
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to free game hacks and generators, directing users to a known malicious redirector. The document contains multiple embedded URLs that likely serve as part of a phishing or malware distribution chain. The presence of a visual download button and instructions for password-protected archives further suggest a malicious workflow designed to trick users into downloading potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 5

  • PDF links to a 'free generator / game hack' redirector critical 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. CRITICAL on its own: the /app/<id>/<slug>-game-hack path shape is unambiguous scam infra, and the host rotates so a host-list match can't be relied on.
  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • 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
  • 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/free-minecraft-skins-pe-game-hack In PDF document text
    • http://lib.uho.ac.id/library/repository/hack-coin-master-for-free_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/pokemon-go-free-kanto-ticket_GM1094591345.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-hack-mod_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/hack-coin-master-ios_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-promo-code-generator-roblox-2021_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/best-minecraft-hacks_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-pocket-edition-free-apk_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/como-hack-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/free-minecraft-printables_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/pubg-365-uc_GM1330123889.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/minecraft-auto-miner-hack_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/how-to-get-free-robux-without-paying-real-money_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-now_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/free-robux-games-that-actually-work_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/coin-master-links-to-free-spins_GM406889139.pdfIn PDF document text
    • http://lib.uho.ac.id/library/repository/roblox-re_GM431946152.pdfIn PDF document text
    • http://lib.uho.ac.id/library//repository/coin-master-hack-ios_GM406889139.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_off000034b8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x34B8 22520 bytes
SHA-256: e1ac066af4628bdabc5fa21e8098d51f30e4bcb791e8c1a900c10eb38deb47ec
font_01_sfnt_off000066b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x66B3 18180 bytes
SHA-256: 03bbaca276f4ce07c12aa831bba89cfcc4ebeeef430a8e21d06434038c5cc938

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