Malicious PDF — malware analysis report

Static analysis result for SHA-256 0a726a6e155d8eb6…

MALICIOUS

PDF

36.5 KB Created: 2021-07-08 17:45:37 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: c089ebd524c715389619a2c73c88f132 SHA-1: 7679d0060a0013b1378089329100f5d26dea14e8 SHA-256: 0a726a6e155d8eb692987d1a901b3e76bce33c05022bdfc94c0b1d63f19c79eb
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users interested in game hacks and in-game currency. The document body and heuristics indicate a lure for 'free generator / game hack' content, which is a common social engineering tactic. The embedded URLs are designed to lead users to potentially harmful sites, likely for further exploitation or malware delivery.

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/how-to-get-more-free-coins-on-coin-master-game-hack In PDF document text
    • http://library.yamasi.ac.id//repository/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/i-was-hacked-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-tool-v1-9_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-descargar-hacks-para-roblox-red-boy_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-if-you-finsh-ths-obby_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/coin-master-free-coins_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/get-free-robux-with-offers_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-high-school-cheat-engine_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/como-recuperar-tu-cuenta-de-roblox-hackeada_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-limiteds-for-free_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-admin-dll_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/como-hackear-el-juego-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/coin-master-hack-online-generator-without-human-verification_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/go-to-robuxhackpro_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-private-server-hack_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id//repository/mcpe-master-hack-unlimited-coins-apk_GM406889139.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/how-hacking-roblox_GM431946152.pdfIn PDF document text
    • http://library.yamasi.ac.id/repository/roblox-free-exploits_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
stream_002_off00003769.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3769 23492 bytes
SHA-256: 350f5730dc88e68b3bb38dd0952d3a94d18c092936457bca150750061e17788e
font_01_sfnt_off00006c72.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C72 18164 bytes
SHA-256: 87539b2ce36dbba66f075720f9556e36c071cb06377775487ffba75d6ed8d31d

Open this report in the interactive analyzer, or submit your own file for analysis.