Malicious PDF — malware analysis report

Static analysis result for SHA-256 703c527e51883d84…

MALICIOUS

PDF

41.9 KB Created: 2021-05-12 01:14:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: addc3a101a2a5b34f5f3fd5d1a2a4106 SHA-1: 09c75b961e27341792efcca145a3a5172597395d SHA-256: 703c527e51883d84598d2e570c4c394394ace1f876be43860667b523d6991155
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to known malicious redirectors, specifically disguised as 'game hacks' and 'generators'. The primary malicious URL identified is https://netcdn.xyz/app/406889139/master-coin-hack-game-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings strongly indicate a redirection-based social engineering attack designed to lead users to potentially harmful content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

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/406889139/master-coin-hack-game-game-hack In PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-mster-free_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/get-free-robux-generator_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/free-modded-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-use-redstone_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/optifine-pe_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-spin-hack-no-human-verification_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/install-coin-master_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-hack-2021-ios_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/minecraft-free-install_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-get-free-robux-gift-cards_GM431946152.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/haktuts-coin-master-free-spin-link-today_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-download-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/minecraft-free-minecraft_GM479516143.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-online-hack-2021_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/best-hack-for-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/coin-master-free-spins-facebook_GM406889139.pdfIn PDF document text
    • http://www.nlcitychurch.org.hk/upload/userfiles/files/how-to-make-roblox-clothes-for-free_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
stream_003_off0000494c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x494C 24728 bytes
SHA-256: 6ded267901ad2d749046957f7c253bfa9383b338c5274e862fa7164ba59fca07
font_01_sfnt_off0000822a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x822A 17976 bytes
SHA-256: 61a7e5df1615dd2bed66e1a1700862b148b1481b00ec863c05290e253e9efb54

Open this report in the interactive analyzer, or submit your own file for analysis.