Malicious PDF — malware analysis report

Static analysis result for SHA-256 199feca499d319c6…

MALICIOUS

PDF

34.4 KB Created: 2021-06-30 04:52:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: bb3d8d40c8dd8f2c4a683cf1488e603d SHA-1: eff32e2f69986b23f25d37863f30149bde51d5fd SHA-256: 199feca499d319c667f48267dc6aa494675aa650fe8a3d6cf9520d23a361eb53
180 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document employs a lure of 'free generators' and 'game hacks' to trick users into clicking malicious links. The document contains multiple embedded URLs, including a known malicious redirector at http://netcdn.co/app/431946152/how-to-ban-someone-in-roblox-hack-game-hack and an IP address link at http://111.68.26.74. These links likely lead to further malicious content or malware downloads.

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.
  • Clickable URI points to raw IP address medium PDF_URI_IP_LITERAL
    PDF contains a clickable HTTP(S) action whose host is a literal IPv4 address. Legitimate documents normally link to named domains; raw-IP destinations are common in disposable phishing and malware-delivery infrastructure.
  • 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-to-ban-someone-in-roblox-hack-game-hack In PDF document text
    • http://111.68.26.74/widyapustaka/repository/youtube-how-to-hack-into-builders-club-on-roblox_GM431946152.pdfPDF link annotation
    • http://111.68.26.74/widyapustaka/repository/how-to-get-free-clothes-roblox-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-just-enter-username_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-free-robux-2021-august-promocode-yt-hurry-2021202120210_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/coin-master-free-rare-cards_GM406889139.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/hack-teleport-roblox-jailbreak-2021_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-hints-and-cheats_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/robux-free-com_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-robux-flame-gg_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/lazy-blocks-com-free-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/https-www-roblox-com-free-download_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/tiktok-free-now_GM835599320.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cheats-roblox-rocitizens_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/free-roblox-accounts-counter-blox_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cheat-roblox-tuto_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/logiciel-hack-roblox-robux_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/roblox-apps-info-hack-generator_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/cheat-roblox-blood-moon_GM431946152.pdfIn PDF document text
    • http://111.68.26.74/widyapustaka/repository/pubg-uc-gift-card_GM1330123889.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_off00003091.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x3091 22092 bytes
SHA-256: 3e0201cc4c2071ff972398c6e3b20a97c3379d0c0a613e8dfc3bb2e118bcadf4
font_01_sfnt_off00006158.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6158 19080 bytes
SHA-256: 1bcecc8ba403c006f1b9a3cb42bc07b48b7a0a11bd1550ff5a5f3ebd951639ca

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