Malicious PDF — malware analysis report

Static analysis result for SHA-256 00c74905a526366d…

MALICIOUS

PDF

35.3 KB Created: 2021-07-08 01:19:14 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-16
MD5: a78a542fa8a4328d2e63e9b6dfb5dd86 SHA-1: 5bf52d34a3592229d3ed6916145f71fb422ca255 SHA-256: 00c74905a526366db1fa973347d1215ce764031db45557051c5684196b3b3c8f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector infrastructure, specifically advertising 'free generator / game hack' lures. The document body and embedded URLs strongly suggest a phishing or scam attempt to trick users into visiting malicious sites. No scripts were extracted, but the presence of malicious links and the lure indicate a high likelihood of further malicious activity upon user interaction.

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/get-free-robux-now-game-hack In PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-discord_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-vehicle-simulator-xp-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/pubg-50-uc_GM1330123889.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-cool-free-avatars-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-link-today-instagram_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/toolbox-for-minecraft-pe-ios_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/how-to-get-any-username-in-roblox-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-how-to-get-the-free-trial-trial-bc_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/roblox-hack-email_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/tiktok-free-likercom_GM835599320.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/what-groups-on-roblox-give-you-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-roblox-jeans_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-game-free-spin_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/free-spins-coin-master-links-twitter_GM406889139.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/if-you-delete-minecraft-can-you-redownload-it-for-free_GM479516143.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/comment-avoir-des-robux-gratuit-sur-pc-hack_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/fun-games-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id/repository/free-robux-no-surbey_GM431946152.pdfIn PDF document text
    • http://lib.fisipumt.ac.id//repository/coin-master-free-spins-and-coins-daily-links_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_off0000323b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323B 22628 bytes
SHA-256: b55af6e5476f091e0497606557bd124d679bb1a718fb67047f462d69c30d8d8c
font_01_sfnt_off000064fa.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64FA 18984 bytes
SHA-256: 0a65e5c108e82a1a0ff4b87c53a9dfb9bb47271213ba12426b6d61436a1aec71