Malicious PDF — malware analysis report

Static analysis result for SHA-256 fc82727319c021f0…

MALICIOUS

PDF

39.6 KB Created: 2021-05-10 14:42:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: a84e1931a15f8a8f0bce34206168c217 SHA-1: ccaeb465840da705187a249ef07b821c4643cbeb SHA-256: fc82727319c021f03fb29ee1d9a4f5ee90a3930a22d568eea89bb1fad9c21881
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically targeting users with lures related to game hacks and free in-game currency. The primary redirector URL is https://netcdn.xyz/app/431946152/free-roblox-toy-codes-not-used-game-hack. This indicates a phishing or scam attempt designed to lead users to potentially harmful websites. The ML classifier strongly supports the malicious nature of this PDF.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9945

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/free-roblox-toy-codes-not-used-game-hack In PDF document text
    • http://bit-sky.com/images/today-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://bit-sky.com/images/can-you-actually-get-free-robux_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/mcpe-master-unlimited-coins-hack-apk_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://bit-sky.com/images/free-online-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-free-spins-1-coin-master_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/coin-master-hack-game-download-mod-apk_GM406889139.pdfIn PDF document text
    • http://bit-sky.com/images/microsoft-rewards-roblox_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_off00003d6f.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3D6F 25332 bytes
SHA-256: b4f1e76a1ba3d9d4fe1ac25c75563688c59896d960263656223e56d140636ae2
font_01_sfnt_off000077f4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x77F4 18592 bytes
SHA-256: 81fe2106c0d5db37bee378c9af18607d256debaa267bc9b857f52da7d8a402be

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