Malicious PDF — malware analysis report

Static analysis result for SHA-256 ab2ebe9e24e58ff9…

MALICIOUS

PDF

33.7 KB Created: 2021-07-05 23:26:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-23
MD5: fb6a236202a123c4cabf00712d8ea1e4 SHA-1: 4044ac92db0a3dee9748a3a999f748ca76953acf SHA-256: ab2ebe9e24e58ff90598922c06b9adaa9b63faa62aef90f025b6c1cdcfce565a
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF file contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'free generators' or 'game hacks' for popular games. The heuristic firings indicate that these links lead to known malicious redirectors and are part of a lure to trick users into downloading potentially harmful content. No scripts were extracted, but the primary attack vector appears to be social engineering via deceptive links.

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/479516143/minecraft-free-download-mac-game-hack In PDF document text
    • http://lib.akper17.ac.id/repository/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-earn-free-spin-in-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-spin-link-today-free_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/op-rewards-robux_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-no-verification-at-all_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-free-spins-and-free-coins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/minecraft-pe-hacks_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-roblox-animations_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/minecraft-redeem-code-free_GM479516143.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/get-free-spins-from-coin-master_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-cards-free-cards_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-2021_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/free-robux-generator_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/download-coin-master-hack-mod-apk_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-links-that-don-t-expire_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://lib.akper17.ac.id/repository/coin-master-app-for-free-spins_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_off00002f93.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F93 21872 bytes
SHA-256: 600e4818727420feabc7ff6ba787fbf67480c7c4055998ae10c9f49665313656
font_01_sfnt_off00005ffe.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FFE 18576 bytes
SHA-256: 06b239d8a28b1d5597486ea199a20c5d387b716390632991d2cfb7c0688950f5

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