Malicious PDF — malware analysis report

Static analysis result for SHA-256 27d66d15e9677ec5…

MALICIOUS

PDF

42.4 KB Created: 2021-05-19 21:40:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: de47580525349dab01aedf54003dc978 SHA-1: 75689b7fc3191b69d2ba0552e3a3b336da1f482a SHA-256: 27d66d15e9677ec5532209c72fb32ebb617e46a4e6f88df993f74a356440933a
200 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document contains multiple links that redirect to scam websites, specifically advertising game hacks and currency generators. The presence of a fake CAPTCHA heuristic indicates a common social engineering tactic to trick users into interacting with these malicious links. While no scripts were explicitly extracted, the PDF structure and embedded links suggest an attempt to lure users to malicious infrastructure, likely for credential harvesting or further malware delivery.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9971

Heuristics 5

  • 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.
  • Fake CAPTCHA / human verification prompt high SE_FAKE_CAPTCHA
    Document displays a fake CAPTCHA or human-verification prompt — used to trick users into running commands or pressing keyboard shortcuts
  • 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/robux-scam-game-hack In PDF document text
    • http://itbits.ie/images/roblox-verification_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/minecraft-hack-client-download_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-free-daily-spins-link_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-online-hack-no-survey-no-password_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-coins_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-free-spins-link-2021-download_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/microsoft-bing-free-robux_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-free-spin-app-apk_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/minecraft-games-free-to-play-online_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/roblox-hack-ios_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-hack-game_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-hack-app-android-download_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/coin-master-hack-app_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/minecraft-free-download-2021_GM479516143.pdfIn PDF document text
    • http://itbits.ie/images/free-robux-2021-no-human-verification_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/get-more-free-spins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://itbits.ie/images/how-can-u-get-free-robux_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/get-free-robux-com_GM431946152.pdfIn PDF document text
    • http://itbits.ie/images/send-me-500-2021-spins_GM406889139.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_off00004687.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4687 26304 bytes
SHA-256: fb8928eba69f9dd79840561b28d3f84786aecb27191a146990d9fa9bd9c7bb6e
font_01_sfnt_off000082f6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x82F6 18340 bytes
SHA-256: 383b1d6f347944e20328288fe5cf1d6e6525012059e3a3c68a0557f2d1f0cd2f

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