Malicious PDF — malware analysis report

Static analysis result for SHA-256 eb9c1180631fdd03…

MALICIOUS

PDF

43.0 KB Created: 2021-05-15 13:01:39 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 72f44644711375becd25f748a56aeea1 SHA-1: 7606dac08f206d8529edf634250345202ace402f SHA-256: eb9c1180631fdd0319d7687bf9d8b19ce3dafd46bf65bfa71c5bc085e84fd583
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically advertising 'free generators' and 'hacks' for popular games like Roblox and Coin Master. The primary lure URL is https://netcdn.xyz/app/431946152/roblox-hack-download-pc-game-hack, which is flagged as a malicious redirector. The document body and embedded URLs reinforce this lure, aiming to trick users into downloading 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/431946152/roblox-hack-download-pc-game-hack In PDF document text
    • http://www.bripi.pl/images/how-many-levels-are-there-in-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-hack-version-2021_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/how-to-get-minecraft-for-free-on-iphone-2021_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/new-free-money-links-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/roblox-avatar-free_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-microsoft_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-free-coins-and-spins_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-scam_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-roblox-shirts-templates_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-human-verification_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/how-to-get-free-robux-without-downloading-any-apps_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/coins-master-hack_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/coin-master-free-spins-link-quora_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-spins-on-coin-master-app_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/roblox-apocalypse-rising-hack_GM431946152.pdfIn PDF document text
    • http://www.bripi.pl/images/free-links-for-free-coins-and-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://www.bripi.pl/images/free-cracked-minecraft-server-hosting_GM479516143.pdfIn PDF document text
    • http://www.bripi.pl/images/how-to-get-20210-robux-for-free_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off000047ea.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x47EA 25540 bytes
SHA-256: 74f105fd0d98e2daa6fd48ff298f6273b46db91360a28115e0ea3db5a48e3280
font_01_sfnt_off000083d2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x83D2 18844 bytes
SHA-256: 78e662fc8066b17092395b08137e99af0342e3f29fa403ad8e1f9446b0d64eeb