Malicious PDF — malware analysis report

Static analysis result for SHA-256 96fdd11099999b89…

MALICIOUS

PDF

36.6 KB Created: 2021-05-20 16:04:10 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-11-22
MD5: 6e77cbca6545e25161f0aa362150758d SHA-1: e22b86e65d24a8d4d01d9fc3accee8d1bb2de449 SHA-256: 96fdd11099999b89cc8e4d066469cb1afd5e0c94b77919569ff8b9c6274242f6
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links designed to lure users into clicking on them, disguised as 'free generators' or 'game hacks'. The primary malicious URL identified is https://netcdn.xyz/app/431946152/best-way-to-get-free-robux-game-hack, which is flagged as a malicious redirector. The document body and embedded artifacts suggest an attempt to exploit user interest in free in-game items to drive traffic to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9447

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/best-way-to-get-free-robux-game-hack In PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/coin-master-free-spins-2021-apk_GM406889139.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/how-to-download-minecraft-for-free_GM479516143.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/minecraft-pocket-apk_GM479516143.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/how-to-get-free-spins-on-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://www.alamrayabali.com/assets/CKImages/files/free-roblox-templates_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
font_00_sfnt_off0000308b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x308B 25740 bytes
SHA-256: 92590bdf15bfbcb3d819e2380dc5d0c288da42faf4a39ec5ab22a629e9e0a9ca
font_01_sfnt_off00006c34.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6C34 18724 bytes
SHA-256: 0e67c697191027b8b448214b8413bf6f3ed0ff1165507b95d6a34aabcad7a82f

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