Malicious PDF — malware analysis report

Static analysis result for SHA-256 bdc7902df64f8b41…

MALICIOUS

PDF

36.0 KB Created: 2021-06-22 06:52:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: 4b8ea0f6c69543528932057a220f37a3 SHA-1: 91f9e86e80975e43aefc2f4e396e2d9d7d89b0ae SHA-256: bdc7902df64f8b4118c6d8cfef727dd3601ec3cffc47a3f3383e6c699c4c8680
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links that redirect to malicious infrastructure, specifically a site offering 'free Robux' and game hacks. The document body and embedded URLs strongly suggest a lure for users seeking in-game currency or cheats, which is a common social engineering tactic. The ML classifier also flagged this PDF with high confidence.

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.co/app/431946152/free-robux-pc-2021-download-generator-game-hack In PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/how-to-get-free-robux-without-human-verification-2021_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/how-to-get-minecraft-for-free-on-mobile_GM479516143.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/coin-master-free-snacks-link_GM406889139.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/free-24-7-minecraft-server_GM479516143.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/roblox-games-free_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/free-roblox-outfits-2021_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/free-robux-pins_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/free-minecraft-premium-account_GM479516143.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/free-robux-xript_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/roblox-free-robux-super-heroes_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/roblox-free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/free-robux-no-verification-no-survey_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/coin-master-free-spin-link-today-2021_GM406889139.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/get-free-spins-on-coin-master-links_GM406889139.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/coin-master-cheats_GM406889139.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/how-to-hack-someones-roblox-accouny_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/coin-master-free-spin-link-twitter_GM406889139.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/shotgun-willy-cheat-codes-roblox-id_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/roblox-free-roblox-card-codes-2021_GM431946152.pdfIn PDF document text
    • https://www.sses.com.sa/uploaded_files/userfiles/files/easy-robux-com_GM431946152.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_off0000325c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x325C 22552 bytes
SHA-256: 86fb973ef98874d466d96750fd57f540d8230e9ff730ed77fd63c053d5c34af6
font_01_sfnt_off000064c4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x64C4 19956 bytes
SHA-256: 760a4f56d76bb781a1b89be91f7da4f3a7e00f02996f05775772046f4c0d1662

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