Malicious PDF — malware analysis report

Static analysis result for SHA-256 2cfc2f26e1846224…

MALICIOUS

PDF

40.9 KB Created: 2021-05-20 20:06:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-27
MD5: f9b77c1f8ad8a40fdeae176554f5eedf SHA-1: 9db5a1063f3569fb59bb0e480a51ad9e1c5828b4 SHA-256: 2cfc2f26e184622410f15ab10ccdef1257e546617f67784e48ec29b4cc490778
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains multiple links to malicious redirector infrastructure, disguised as a "free Robux generator" or "game hack". The document body and heuristics indicate a lure to trick users into clicking these links, likely leading to further malicious content or downloads. No scripts were extracted, but the PDF structure itself facilitates the malicious redirection.

Machine Learning

  • Nyx PDF Classifier malicious score 0.7508

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-human-verification-2021-game-hack In PDF document text
    • https://www.wco.org.uk/uploads/files/files/roblox40com-robux_GM431946152.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/hackear-coin-master-sin-verificacion_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/coin-master-free-cards-hack_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/coin-master-free-cards-2021_GM406889139.pdfIn PDF document text
    • https://www.wco.org.uk/uploads/files/files/coin-master-hack-mod-apk_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
font_00_sfnt_off0000355f.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x355F 25896 bytes
SHA-256: 30990b00a5024556c2eaa48bb1576613c99958f4587a0c9dbd716136b6d92389
font_01_sfnt_off00007042.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7042 2852 bytes
SHA-256: e9630f3bb738ae3bc329a423cf069c8035d70ce2227e3557c42815f85ad3284f
font_02_sfnt_off00007a03.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7A03 19792 bytes
SHA-256: 2fcc096d095577e17bc813bca386b7e419c64e6aba5a370ab2124621dd0af6c5

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