Malicious PDF — malware analysis report

Static analysis result for SHA-256 032e003cc85d37f0…

MALICIOUS

PDF

35.1 KB Created: 2021-07-06 01:16:38 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-21
MD5: b3bab4a905445a43ba0524f0f96c0119 SHA-1: ac28b676258493c1f7aa2ab8aaa057d0ff0fe260 SHA-256: 032e003cc85d37f075f8723b4c53492842959fea397f5a7467dd53cb30bf8a24
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' content. The primary lure is the URL http://netcdn.tw/app/406889139/coin-master-hack-2021-ios-game-hack, which is designed to trick users into clicking through to potentially malicious sites. No scripts were extracted, but the embedded URLs and the nature of the lure strongly suggest a phishing or scamming attempt.

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/406889139/coin-master-hack-2021-ios-game-hack In PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/tiktok-like-bot-free_GM835599320.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/kupcake-hack-roblox-64-bits_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/auto-clicker-for-roblox-mac-free_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-minecraft-website_GM479516143.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-hats-on-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-cheat-dungeon-quest_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/hack-roblox-jump_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/how-to-get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/hack-coin-master-apk-358_GM406889139.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/tiktok-likes-for-free_GM835599320.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/claimrobux-net_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-wings-roblox-2021_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-roblox-accounts-with-lifetime-obc_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/free-builders-club-roblox-script_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-hacks-for-apocalypse-rising_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://opac.akafarma-aceh.ac.id/repository/roblox-hack-tool-download-2021-pc_GM431946152.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_off0000323a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x323A 23096 bytes
SHA-256: 3f1cdd066aeba6f6d831bce4c942fbea11a6f8bfb998af0ae5134a83980b3813
font_01_sfnt_off0000662c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x662C 18408 bytes
SHA-256: e909f45242a9fd0be6739d7b47574e2ac84d9da9f41b4bb4c7d450081742910c

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