Malicious PDF — malware analysis report

Static analysis result for SHA-256 c246533652c4beb8…

MALICIOUS

PDF

37.8 KB Created: 2021-05-24 03:09:24 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: 60ae42b1a44759b472c0e5d82a136be7 SHA-1: 30d9e9f2345b9bd2e5098762bdab01fb4db6a9b4 SHA-256: c246533652c4beb8a5580893f19f22cb6aa49fe492ba84b94356dc73cc587690
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to a known malicious redirector infrastructure, disguised as 'free generators' for popular games like Robux. The document body explicitly mentions 'How To Get Free Robux Without Downloading Apps' and includes a call to action to access a generator. This indicates a phishing or scam attempt to redirect users to potentially harmful sites.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9463

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/how-to-get-free-robux-without-downloading-apps-game-hack In PDF document text
    • https://www.cinemapalace.ro/trailer/files/free-minecraft-thumbnails_GM479516143.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/coin-master-daily-gift-free-spins-and-coins-link_GM406889139.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/roblox-help-free-robux_GM431946152.pdfIn PDF document text
    • https://www.cinemapalace.ro/trailer/files/how-to-get-minecraft-for-free-on-mac_GM479516143.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_002_off00003330.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3330 25552 bytes
SHA-256: 1784a60e71a44ae1b8fc235171c5d60af8cd9027bf640939f5c0fbbd9e8daea4
font_01_sfnt_off00006d88.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D88 19876 bytes
SHA-256: 8da7f6a753952615a486eb6a0fdfe7794e2ad045808eb185ac8c0a25e8999c49

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