Malicious PDF — malware analysis report

Static analysis result for SHA-256 f7294fba11ad7616…

MALICIOUS

PDF

47.4 KB Created: 2021-05-19 02:06:47 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2026-06-04
MD5: c8f7c9f0dcb576a9d5b49c7aabc64ceb SHA-1: 1fd7fd2e5872a7eaeee750d8ece3f960853e4e93 SHA-256: f7294fba11ad76160d92c24fadb3aab6bfd1b962da1c2376516191f1d670d01b
200 Risk Score

Malware Insights

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

The PDF contains a lure impersonating Facebook to offer free Robux, directing users to a malicious redirector. This is a common tactic for credential phishing or delivering further malware. The ML classifier also flagged this PDF as malicious, increasing confidence in its malicious intent.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9013

Heuristics 5

  • 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.
  • Brand-impersonation credential phishing lure high SE_BRAND_CREDENTIAL_PHISH
    Document impersonates a well-known consumer brand and uses account-security / verification language ('unusual activity', 'account on hold', 'verify your account') to steer the reader to a credential-harvesting link. Corroborated by: call-to-action link host does not match the impersonated brand: https://netcdn.xyz/app/431946152/robux-free-c-game-hack.
  • 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/robux-free-c-game-hack In PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-get-free-robux-for-kids_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/robux-generator-com_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/regal-world-coin-master_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/earn-rbx_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/robux-hack-tools_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-master-free-spins-link-today-new_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/how-to-get-free-skins-in-minecraft_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-robux-no-human-verification-no-survey_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-robux-earn_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/roblox-system_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/free-robux-only-username_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/minecraft-beta-free_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/tiradas-coin-master_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/coin-master--hack_GM406889139.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/robux-no-survey_GM431946152.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/minecraft-bedrock-free-server-hosting_GM479516143.pdfIn PDF document text
    • http://gamardelli.com.br/images/ckfinder/files/facebook-coin-master-free-spins_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_003_off0000490b.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x490B 31168 bytes
SHA-256: d74802ece709d32941b33db113e0e05410041fccb51b9b79b46e14f6f8d43c89
font_01_sfnt_off00008de7.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8DE7 2824 bytes
SHA-256: 45bf821f81e84f4aa8d8374f492b182b36404f38b462c7dc471deaad6ab5c104
font_02_sfnt_off00009795.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x9795 18012 bytes
SHA-256: 3f1ded8a9c51e4f0f41c660fd84d3573ebe8f92a83837bcaa523a9614d650e73

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