Malicious PDF — malware analysis report

Static analysis result for SHA-256 8a3e9e925483f601…

MALICIOUS

PDF

34.3 KB Created: 2021-07-09 18:04:05 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fb002bdb112673e18428e6928ba29a9e SHA-1: 0564aa148af4d3eca483d8c325a24dc6a6864197 SHA-256: 8a3e9e925483f601069a8f6902085ca7ad5f203c90d79271dab644eb388dfa77
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirector infrastructure, specifically advertising 'free generators' and 'hacks' for popular games like Coin Master and Roblox. The primary malicious URL identified is http://netcdn.tw/app/406889139/coin-master-free-spain-game-hack. The document body and heuristics confirm a lure-based approach to redirect users to potentially harmful sites, likely for financial scams or further 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/coin-master-free-spain-game-hack In PDF document text
    • http://simon-skov-fougt.dk/billeder/is-there-any-way-to-get-free-robux-on-roblox_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-get-more-robux-for-free_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/clients-minecraft_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/20-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-hack-no-human-verification-safe_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/play-coin-master-online-free_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-com-free-play_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-free-ios-2021_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-com-www_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-esp_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-no-download-hack_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-free-spins-11-01-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-hack-robux_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-free-chest-link_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/roblox-free-robux-com_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/minecraft-pe-free_GM479516143.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/free-spins-coin-master-links-2021_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/how-to-get-free-robux-app_GM431946152.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-free-spins-hack-apk-download_GM406889139.pdfIn PDF document text
    • http://simon-skov-fougt.dk/billeder/coin-master-hack-without-downloading-apps_GM406889139.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
stream_002_off00002e95.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x2E95 23376 bytes
SHA-256: 0539b44998ef9c6ac57976ae28b481b61216628d12cbb3473e8248cc259d2786
font_01_sfnt_off00006388.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6388 18176 bytes
SHA-256: c90cd52c690b3b1dd04b69356ad4f8db221968fb130a3d2ff71dcd50323a1a90

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