Malicious PDF — malware analysis report

Static analysis result for SHA-256 4fb19c0856471fad…

MALICIOUS

PDF

44.1 KB Created: 2021-05-14 10:09:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-16
MD5: af8839223a265890848b7527fb2e0fd9 SHA-1: a49565c109289d790508e784a7848a2d22c4e6f4 SHA-256: 4fb19c0856471fada381682a1bb94274c421dffa960bd91677943dc25069a168
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links that redirect to malicious infrastructure, masquerading as game hacks or generators. The primary lure URL is https://netcdn.xyz/app/479516143/how-to-install-minecraft-for-free-game-hack. While no scripts were explicitly extracted, the PDF structure and heuristic firings indicate a malicious redirector workflow, likely intended to deliver a secondary payload or phish for credentials.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9648

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/479516143/how-to-install-minecraft-for-free-game-hack In PDF document text
    • http://w-i-r.de/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/roblox-army-free-robux_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/blogger-free-spins-and-coins_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/minecraft-name-tag-hacks_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/best-free-minecraft-servers_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-hack-in-arsenal_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/como-hackear-coin-master-en-espaol_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/get-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/coin-master-hack-apk-no-fb-login_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-download-minecraft-for-free-on-windows-10_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/game-give-free-robux_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/free-things-on-roblox_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/hack-coin-master-nyc_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/robloxhacks_GM431946152.pdfIn PDF document text
    • http://w-i-r.de/images/coin-master-free-spins-heaven_GM406889139.pdfIn PDF document text
    • http://w-i-r.de/images/how-to-make-a-minecraft-java-server-for-free_GM479516143.pdfIn PDF document text
    • http://w-i-r.de/images/hack-coin-master-32-mod-apk_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000499c.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x499C 24492 bytes
SHA-256: db77abf9df63c24a5ec23e72ac602fcbf39d9bea193b89eef9dde82f3bcd9ffa
font_01_sfnt_off0000812e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x812E 2840 bytes
SHA-256: 3fb127b764b9d10f5525bc4de5ec8316de704409ccb0cf21cff3ad8a30d11676
font_02_sfnt_off00008adf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8ADF 17948 bytes
SHA-256: 5e3ba7e4cd3ca4e9461728952bafe8ac7745d23e1bc3d1385ef5be4278fd35be

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