Malicious PDF — malware analysis report

Static analysis result for SHA-256 5b57b0b50e09d3d6…

MALICIOUS

PDF

35.0 KB Created: 2021-07-06 02:01:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: ad450e78fd8b58e737ba8e333806b3be SHA-1: 41b9cbbe6ae145659303272303f81abe7af18f23 SHA-256: 5b57b0b50e09d3d6a7b43fb76edd89686129c86ee81ed4f10da96fab558eeee0
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs that are designed as lures for game hacks and free currency, a common tactic for phishing or malware distribution. The heuristic 'PDF_GAME_HACK_REDIRECT_LURE' strongly indicates this malicious intent. While no scripts were extracted, the document's structure and embedded links suggest it is intended to redirect users to malicious websites.

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-spins-coin-master-haktuts-game-hack PDF link annotation
    • http://stiepariperpus.web.id/sarjana//repository/roblox-top_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/roblox-free-executor_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-jailbreak-roblox-money_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/earn-points-for-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-create-your-own-scripts-hacks-in-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/youtbehow-to-get-free-robux-without-doing-surveys_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/como-hackear-horse-valley-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/free-robux-rewards_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/100-free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-robux-ad-banner_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/free-coin-master-hack-no-verification_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/lots-of-robux_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/all-of-the-free-roblox-clothes_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana//repository/how-to-change-your-name-on-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/fashion-frenzy-games-free-online-roblox_GM431946152.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/collect-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://stiepariperpus.web.id/sarjana/repository/how-to-hack-any-player-in-roblox_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_off0000314f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x314F 23184 bytes
SHA-256: 717798bbfed7218ed0866cf63ce2c0cb4d2db95c3eec9e66efd872208154c9aa
font_01_sfnt_off000065b3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x65B3 18484 bytes
SHA-256: f7b6576a3f9b0348374d3a5fd8e4bb71623a7ab150aa44cb754c73ac43401ac4

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