Malicious PDF — malware analysis report

Static analysis result for SHA-256 dfef5e68a38031c8…

MALICIOUS

PDF

35.3 KB Created: 2021-07-05 20:40:06 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: d325a3ecc68f2fb251001f4e94e914ef SHA-1: ad95a77856fbca3a3f66e280d8f9a65f4dd83592 SHA-256: dfef5e68a38031c8d7b6dad9b7522d82e5f62b1421e3b28fc22e500130e02709
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to external websites, including a known malicious redirector, that promise free game-related items or downloads. The document body and heuristics indicate a lure for game hacks and free currency, likely leading to malware or scams. No scripts were extracted, but the embedded URLs are the primary indicators of malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

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/479516143/minecraft-apk-free-download-016-0-game-hack In PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-robux-without-verifying_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-four-free-items_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/7-year-old-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-games-com-free_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/To-export-more-data-upgrade-to-a-Guru-or-Business-subscription-plan_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-free-hair-on-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coinmaster-gps-user-review-coinmaster-coin-master-hack-pagedemo-index_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/how-to-get-robux-for-free-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-hack-safe_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/ways-to-get-free-robux-2021_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-robux-thumbnail_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/lua-c-free-camera-roblox_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-spins-2021-generator_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/hack-account-roblox-wiki_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-roblox-com-passwords_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/roblox-adopt-me-free-pets_GM431946152.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-minecraft-bedrock-server_GM479516143.pdfIn PDF document text
    • http://samavetpharm.com/userfiles/files/free-minecraft-bedrock_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_off000031da.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31DA 22604 bytes
SHA-256: e67ddab66ceb8a861f7af00c8a506e5c17850b27e056a4ad97372a92f9b67a34
font_01_sfnt_off0000642c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x642C 19372 bytes
SHA-256: 199fc5fb5555a01dd07f1f7af865c4c0146787c368d5cdea82e8d68cb589e1c5

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