Malicious PDF — malware analysis report

Static analysis result for SHA-256 d6cfd52a1ead0d0b…

MALICIOUS

PDF

48.1 KB Created: 2021-05-16 21:03:56 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-11
MD5: 460a2d666195310744303588d18f953d SHA-1: 5c512a1ae2b4fead3ebc1a2315d9bc54a75635d6 SHA-256: d6cfd52a1ead0d0b223a5bfa2adf85ffec386cab73bd6ca1ad8796ac99578ea3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded links that redirect to malicious infrastructure, specifically promoting 'game hacks' and 'generators' for popular games. The primary redirector URL is https://netcdn.xyz/app/431946152/hack-roblox-players-game-hack. The document's content and heuristics strongly suggest a phishing or scam attempt designed to lure users to potentially harmful websites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

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/hack-roblox-players-game-hack In PDF document text
    • http://dieter-sauter.com/images/get-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/real-robux-generator-2021_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-link-spin_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/roblox-hack-game_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spin-app-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-spins-on-coin-master-iphone_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/where-can-i-get-free-spins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-get-free-robux-inspect_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-pc-hack-download_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-free-spins-link-iphone_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-spins-coin-master-2021_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-unlimited-robux_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/master-coin-hack-mod_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/how-to-hack-someones-minecraft-account_GM479516143.pdfIn PDF document text
    • http://dieter-sauter.com/images/coin-master-email-rewards_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-robux-apps-that-work_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/pop-slots-free-vegas-casino-slot-machine-game-coin-master_GM406889139.pdfIn PDF document text
    • http://dieter-sauter.com/images/robux-offers_GM431946152.pdfIn PDF document text
    • http://dieter-sauter.com/images/free-roblox-girl-hair-not-a-model_GM431946152.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off00004b2e.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4B2E 28724 bytes
SHA-256: d235485c897dd02753f9bc494492f84fb1a4497dcb21db340c799b8132329bc9
font_01_sfnt_off00008d24.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8D24 3500 bytes
SHA-256: e49a868379cd3c37e631c5a53c010e21f38d803532a2b8417aee82315d4e8634
font_02_sfnt_off000098c6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x98C6 18516 bytes
SHA-256: 90bd1aee5c470a37d92cc59b0941c0b496151a5f4b07a4ca4aaf8cbf88ee13c9

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