Malicious PDF — malware analysis report

Static analysis result for SHA-256 e610b99e2f4c7660…

MALICIOUS

PDF

43.4 KB Created: 2021-05-16 07:02:51 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: f9ac291a893cd112250e22efbc378642 SHA-1: aaf3be11857ad2685b1f92c100d7151aaea00f31 SHA-256: e610b99e2f4c7660de14c9ef88df2103f67c9e17a7c73df4f67e5e6d81f6aedf
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document contains multiple embedded URLs designed to lure users into clicking on links related to game hacks and free currency. The primary URL, https://netcdn.xyz/app/431946152/get-robux-today-game-hack, is flagged as a malicious redirector. The document's content and structure strongly suggest a phishing or scam attempt, likely delivered as a spearphishing attachment.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9969

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/get-robux-today-game-hack In PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/minecraft-for-macbook-free_GM479516143.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-generator-2021-no-survey_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/roblox-free-hair-codes_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-mod-apk-free-download_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-daily-bonus-hack_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/how-to-buy-robux-for-free_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/free-roblox-codes_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/games-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-cards-link-2021_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-free-spins-android_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/hack-free-spin-coin-master_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/hacks-for-minecraft-bedrock_GM479516143.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/how-to-make-a-server-in-minecraft-java-for-free_GM479516143.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/coin-master-card-collection-hack_GM406889139.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/easy-robux-hack_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/roblox-promo-code-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/rbx-robux_GM431946152.pdfIn PDF document text
    • https://maths-pdf.fr/ckfinder/userfiles/files/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Related samples 8

Ranked by shared artifacts, heuristics, extracted URLs, CVEs, and signatures.

Full JSON: related samples API

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004ab5.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4AB5 26316 bytes
SHA-256: aa012004fa27e90253d7b967a3f1726ad3af04ca6f97a41d3d25288489fb8aef
font_01_sfnt_off0000867d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x867D 18536 bytes
SHA-256: 52f9c859b3f332441204d5c114ca3069b0f0b255dc0376a71d348f06f556bd46

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