Malicious PDF — malware analysis report

Static analysis result for SHA-256 f60b7d4c21e5db2f…

MALICIOUS

PDF

34.0 KB Created: 2021-07-21 13:05:12 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: e1c704cecf5143e8e9439fa1b64829f6 SHA-1: e4e77ff38a5428a7c2b0933edb7cb4be6b4c4f1d SHA-256: f60b7d4c21e5db2fc0601402bb79eb315db4a2638afb5f9252df03d2f7260ad4
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains embedded links that redirect to malicious infrastructure, specifically advertising a "free Robux hack". The document body and heuristics indicate a lure for users to click these links, likely leading to further malicious content or downloads. Although no scripts were explicitly extracted, the nature of the PDF and its embedded links suggest a potential for JavaScript execution or other exploit vectors.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9955

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/free-robux-hack-2021-game-hack In PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/minecraft-for-free-on-phone_GM479516143.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/free-robux-please_GM431946152.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/how-to-get-free-followers-on-tiktok_GM835599320.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/minecraft-java-edition-code-free_GM479516143.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/free-robux-hack-generator_GM431946152.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/free-minecraft-worlds_GM479516143.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/free-coin-master-spins-and-coins_GM406889139.pdfIn PDF document text
    • https://www.carela-group.com/wp-content/uploads/fsqm-files/coin-master-free-spins-daily_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
font_00_sfnt_off00002c5e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2C5E 23116 bytes
SHA-256: b06d9a89de7776c9fec764ec09014fef233c1f49ef8716dfe3db9286a73c7d97
font_01_sfnt_off0000609a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x609A 19000 bytes
SHA-256: 50568fc7a8142eae64dd61285c1f793be6192b112dcc14b27c629c71df451875