Malicious PDF — malware analysis report

Static analysis result for SHA-256 6795f1d397ce33c4…

MALICIOUS

PDF

32.6 KB Created: 2021-07-19 12:30:32 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b89ebbec9c2d030aa14c8080969b3a5 SHA-1: 0dede2122613bb1d1b4c5b290471fdb146a8f297 SHA-256: 6795f1d397ce33c45e20b8e7e6fe83628c74f23f45579adb48fea30069f0aab6
160 Risk Score

Malware Insights

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

The PDF contains multiple links to known malicious redirectors, specifically advertising 'free Robux' or game hacks. The document body includes a prominent call to action and directs users to a URL that likely serves as a gateway to further malicious content or downloads. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9900

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 http://netcdn.tw/app/431946152/roblox-free-robux-game-hack In PDF document text
    • https://domoticaaplicada.com/images/free-robux-hack-2021_GM431946152.pdfIn PDF document text
    • https://domoticaaplicada.com/images/minecraft-mobile-free_GM479516143.pdfIn PDF document text
    • https://domoticaaplicada.com/images/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://domoticaaplicada.com/images/real-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://domoticaaplicada.com/images/minecraft-realms-free-trial_GM479516143.pdfIn PDF document text
    • https://domoticaaplicada.com/images/robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://domoticaaplicada.com/images/how-to-get-free-robux-easy-no-download_GM431946152.pdfIn PDF document text
    • https://domoticaaplicada.com/images/free-tiktok-fans-no-human-verification-or-downloading-apps_GM835599320.pdfIn PDF document text
    • https://domoticaaplicada.com/images/coin-master-hack_GM406889139.pdfIn PDF document text
    • https://domoticaaplicada.com/images/how-to-host-a-minecraft-server-for-free_GM479516143.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_off00002cf1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2CF1 21976 bytes
SHA-256: ec9ca45bfe72a53c78b8efc8d23ff498191f57cb0aaa538927ecd958442bb02d
font_01_sfnt_off00005d57.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5D57 18272 bytes
SHA-256: ced743fd4e183934f0e9a866f4a508632ab3f4a3a6540ddcf16440f4ac9ef834