Malicious PDF — malware analysis report

Static analysis result for SHA-256 301977ba679b6958…

MALICIOUS

PDF

33.5 KB Created: 2021-07-04 08:35:42 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 415394897d4a9c4ad06c831ae64d21cf SHA-1: 3ec62e103c546746799a5849668bea1953b32100 SHA-256: 301977ba679b6958cb27685574f74326c93b31c685a745efee3ad15230881f4a
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains embedded URLs and a lure related to game hacks, specifically mentioning 'free coins and spins for Coin Master'. The primary malicious URL, http://netcdn.tw/app/406889139/free-coins-and-spins-for-coin-master-game-hack, is highlighted by multiple heuristics as a redirector for such scams. The ML classifier strongly indicates maliciousness, suggesting the document is designed to trick users into visiting the malicious link, likely leading to further malware download or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/free-coins-and-spins-for-coin-master-game-hack PDF link annotation
    • http://pustaka.fkm.unand.ac.id/repository/robux-cheats-for-roblox-app_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/can-you-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-do-you-hack-roblox-users_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-roblox-cards-not-used_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-get-addidas-shoes-for-free-in-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/the-new-roblox-hacker_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/attack-hacker-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/hackaron-roblox-hack-password_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-roblox-codes-murder-mystery-2_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-admin-script-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-hack-cheat-engine-62_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-robux-generator-no-survey-or-offers_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/robux-hack-on-wish_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/free-glasses-roblox_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-play-for-free-without-downloading_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/earn-free-robux-with-points_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/how-to-get-free-tix-in-roblox-pokemon-brick-bronze_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/roblox-everything-free_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/avatar-the-last-airbender-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.fkm.unand.ac.id/repository/is-it-easy-to-hack-on-roblox_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00002eb0.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2EB0 22152 bytes
SHA-256: c12cb065204a0a73e88fe6fba6b80c291fab2c1933cbe4b7d151b6de1a91d208
font_01_sfnt_off00005fdc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5FDC 18348 bytes
SHA-256: c90f632020bcb1e728f62a43997badda2860e0d329262e99dedc1f8a12c39115

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