Malicious PDF — malware analysis report

Static analysis result for SHA-256 32aa80b0365e0a78…

MALICIOUS

PDF

35.5 KB Created: 2021-06-28 00:50:09 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: 946c10d6e027459cd0d5c4fe0a97792c SHA-1: 58e3778408b104153b84b15ff626d5cb5eff6c7a SHA-256: 32aa80b0365e0a78b09779922305be0f923bf0a5358be5a60a208738d6a66dcf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, masquerading as free game hacks. The primary lure URL is http://netcdn.co/app/431946152/how-do-you-get-roblox-for-free-game-hack, which is associated with known malicious redirectors. The document body and embedded URLs reinforce this lure, aiming to trick users into visiting potentially harmful sites.

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.co/app/431946152/how-do-you-get-roblox-for-free-game-hack In PDF document text
    • http://library.ulb.ac.id/repository/free-safe-roblox-exploits_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-generate-free-coin-master-spin_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-for-kids-no-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/hacks-de-roblox-para-teletransportarse_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/rbx-free_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/daniel-newhard-roblox-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-hack-roblox-accounts-without-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/pastebin-free-robux-fast-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/free-robux-generator-2021-no-verification_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-robux-generator-no-human-verification-or-survey-2021_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/robloxgiveawayxyz-robux-hack_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/what-games-give-you-robux_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/how-to-get-free-robux-easy-website_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/roblox-free-bot-followers_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/when-was-minecraft-free_GM479516143.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/coin-master-free-attack-link_GM406889139.pdfIn PDF document text
    • http://library.ulb.ac.id/repository/exploit-hacks-roblox_GM431946152.pdfIn PDF document text
    • http://library.ulb.ac.id//repository/free-minecraft-skins-java_GM479516143.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_off0000319f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x319F 23012 bytes
SHA-256: c75cd19ffc36fcbe4582b85bad834e3bb2f61aa7fc5c216c78c42ad67a99d131
font_01_sfnt_off000064d3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64D3 19388 bytes
SHA-256: 0287b2efa86f82f9cff2286bd64445162d29d1d724c92a5799971612c145cba7

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