Malicious PDF — malware analysis report

Static analysis result for SHA-256 943b7acec1200f14…

MALICIOUS

PDF

35.5 KB Created: 2021-07-02 03:33:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 94a8fbf4fb5ac0651fd2ce3fe336b6b5 SHA-1: d3004fbe65944632ec24f3cfca39fae50ad4ca42 SHA-256: 943b7acec1200f14caff0af851b80cdf555afd2c4076e0c2576c1824fd1eb643
160 Risk Score

Malware Insights

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

The PDF document contains links that redirect to malicious infrastructure, specifically promoting game hacks and cheats. The heuristic firings indicate that the PDF links to a known malicious redirector and lures users with a download button. The document body and embedded URLs reinforce this lure by mentioning game hacks and free items for popular games like Roblox and Coin Master. The primary attack pattern involves tricking users into downloading potentially malicious files from the redirected URLs.

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.co/app/431946152/download-hack-roblox-adopt-me-money-game-hack In PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-verification_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-hack-any-roblox-account_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-free-spins-hack-but-no-surveys_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/how-to-get-free-robux-website_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/tiktok-likes-free_GM835599320.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/coin-master-daily-free-spins-link-haktuts_GM406889139.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/you-promised-my-son-free-robux_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/minecraft-free-games-no-download_GM479516143.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-executor-2021-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-hack-2021-for-computer_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-marketplace-sell-for-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/mad-city-roblox-hack-script_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-robux-meep-city_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-snowman-simulator-cheats-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-how-to-make-badges-for-free_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-free-play_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/como-conseguir-robux-sin-hacks-en-juegos_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/free-bc-roblox-accounts-2021_GM431946152.pdfIn PDF document text
    • http://perpusfkip.upstegal.ac.id/repository/roblox-treasure-quest-cheat_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_off0000309b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x309B 22652 bytes
SHA-256: 02781a71cd6eea69223fe527ce849a8a02b26c65cd324c305234ace2f08af40d
font_01_sfnt_off00006318.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6318 19816 bytes
SHA-256: 7674dad0592f993927b7774a60e55b29c14ac5683c3212426ebca3e081cdff4a

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