Malicious PDF — malware analysis report

Static analysis result for SHA-256 08b752d9e2d1657f…

MALICIOUS

PDF

35.2 KB Created: 2021-07-05 14:29:26 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: db1c736b5d2d9734937cc4b441839736 SHA-1: 9d958025a3450c4a951951d3fa2dc4fc5254fb5c SHA-256: 08b752d9e2d1657fa50a42ba7e865ec60f11373698df6083c182aff6ba1212c2
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure related to game hacks and free items to trick users into clicking a link. The primary link, http://netcdn.tw/app/431946152/roblox-free-boombox-games-game-hack, is identified as a malicious redirector. While no scripts were explicitly extracted, the PDF structure and embedded URLs suggest a potential for JavaScript execution or further redirection to malicious sites, aligning with common phishing and malware distribution tactics.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • 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.
  • 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/431946152/roblox-free-boombox-games-game-hack In PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/can-i-get-free-tiktok-likes_GM835599320.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/free-spins-coin-master-hack-2021_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-promo-card-code-list-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-coins-and-spins-link-2021_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-cheats-2021exe-download_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/safe-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-free-spin-app-reviews_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-theme-park-tycoon-2-hack-script_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-rs-hack-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-roblox-account-giveaway_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-robux-glitch-xbox-one-2021_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-shirt-promo-code-for-roblox_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/links-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/60-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-hack-apk-with-fb-login-2021_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb//repository/coin-master-free-spin-today_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/free-gold-cards-in-coin-master_GM406889139.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/roblox-speed-hack-2021-booga-booga_GM431946152.pdfIn PDF document text
    • http://library.feb.unila.ac.id/rfeb/repository/coin-master-hack-mod-game-download_GM406889139.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off00003262.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3262 22676 bytes
SHA-256: 3f7f93d7dce052c6291bbbda48deaaf450ceaec8b9b94dc87b09f674c2182ca3
font_01_sfnt_off0000653b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x653B 18908 bytes
SHA-256: 8a99f20d7a01b13241ba84c1c29c1074113b59d12074d0aa7a7ea460bf6bdaed

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