Malicious PDF — malware analysis report

Static analysis result for SHA-256 aebfe39f56bb24bf…

MALICIOUS

PDF

42.7 KB Created: 2021-05-11 06:04:57 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-07
MD5: 65910094b75df7985b4ce4575389ce3a SHA-1: 292ab0b5ca87adc225477717bb44026b55cd0a2f SHA-256: aebfe39f56bb24bfcc30d1238956f930259552bef0e3468a38796b0b92d69305
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 game hacks and free generators. The primary lure URL is 'https://netcdn.xyz/app/431946152/roblox-rape-hack-game-hack'. While no scripts were explicitly extracted, the PDF structure and embedded URLs strongly suggest an attempt to trick users into visiting malicious sites, likely as a precursor to further exploitation or malware delivery.

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-rape-hack-game-hack In PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-mod-version-free-download-34-4_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/archery-master-3d-unlimited-coins-hack_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/free-spins-and-coins-coin-master-2021-link_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-links-2021_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-spin-link_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/how-do-you-get-roebucks-for-free_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-claim-spins_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/coin-master-free-spins-and-coins-today_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/free-robux-now_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/roblox-pink-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/roblox-hack-apk_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/how-to-get-free-robux-with-no-verification_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/how-to-get-minecraft-java-free_GM479516143.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/microsoft-free-robux_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/hack-coin-master-spin_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/cone-master_GM406889139.pdfIn PDF document text
    • https://www.elternrat-bolligen.ch/images/how-to-hack-roblox-for-robux_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_off000049aa.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x49AA 25344 bytes
SHA-256: 5de47e9763b402e194d3a8b18c70bb8b54dd863ca3ac44ac79af8495a3984ae0
font_01_sfnt_off00008413.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8413 18356 bytes
SHA-256: 8a1fe0c7231104fca4fa627868bae52978e90e92fc8d209bfe3611444447d27b

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