Malicious PDF — malware analysis report

Static analysis result for SHA-256 b421041a2143a759…

MALICIOUS

PDF

45.7 KB Created: 2021-05-17 20:36:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-08-25
MD5: ca680c194978d74e134bef1cecb3b9c3 SHA-1: c4b6b3014b2e412840606dbdd394606a1912b964 SHA-256: b421041a2143a7597706fdf648ac86f8d069e6f4d9fe5ccde0be0ad22f6541ea
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, specifically promoting game hacks and free currency lures. The primary redirector URL is https://netcdn.xyz/app/431946152/roblox-apocalypse-rising-hack-game-hack, which is associated with other malicious PDF lures. The document body and embedded links suggest a social engineering tactic to trick users into visiting potentially harmful sites.

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 https://netcdn.xyz/app/431946152/roblox-apocalypse-rising-hack-game-hack In PDF document text
    • http://global-tech-security.be/images/coin-master-rewards-2021_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/minecraft-cracked-client_GM479516143.pdfIn PDF document text
    • http://global-tech-security.be/images/vip-roblox-free_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/how-to-get-free-roblox-gift-cards_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-free-coins-link_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/how-to-get-free-robux-on-pc_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-free-spins-2021_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/minecraft-coins-free_GM479516143.pdfIn PDF document text
    • http://global-tech-security.be/images/free-minecraft-java-account_GM479516143.pdfIn PDF document text
    • http://global-tech-security.be/images/como-sacar-buen-puntaje-en-juego-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/free-minecraft-shaders_GM479516143.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-hack-apk-online_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/free-minecraft-account_GM479516143.pdfIn PDF document text
    • http://global-tech-security.be/images/free-robux-hack-no-human-verification_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/completed-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/roblox-person_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/robux-for-surveys_GM431946152.pdfIn PDF document text
    • http://global-tech-security.be/images/free-chest-coin-master_GM406889139.pdfIn PDF document text
    • http://global-tech-security.be/images/coin-master-fan-hack_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_003_off00004bea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4BEA 29032 bytes
SHA-256: 62642448c3c41b43fb9f0d00d4527a5f7c173b41d839795576af2c4819da28d1
font_01_sfnt_off00008e4a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8E4A 18948 bytes
SHA-256: c81671b47ab5e7fd402c3d16699df98b51b9b699798839031d1ff55305a8bd80

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