Malicious PDF — malware analysis report

Static analysis result for SHA-256 6bae022564086d85…

MALICIOUS

PDF

34.0 KB Created: 2021-07-04 14:04:25 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-13
MD5: fe28ebed82fc020b89b4ff9dbba39659 SHA-1: 6c3296c59884d5d9450e45e97a20de8bb521f9cd SHA-256: 6bae022564086d85e9f1b0254a707686cd0fa8dda0b41f4082ca97cf201be6f5
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple links to a known malicious redirector, disguised as a 'game hack' generator. The document body and embedded URLs strongly suggest a lure for users seeking in-game currency or cheats for popular games like Coin Master and Roblox. The primary malicious action is redirecting the user to potentially harmful content or further malware downloads.

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/406889139/coin-master-free-spins-and-coins-haktuts-game-hack In PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/hack-coin-master-pc_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/good-roblox-games-about-cities-for-free_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/minecraft-java-account-free_GM479516143.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-coin-master-cards_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-coins-on-coin-master_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/pubg-uc-vpn-apk_GM1330123889.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/roblox-recover-hacked-account_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/how-to-get-hacks-on-minecraft_GM479516143.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/cheats-for-getting-robux_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/minecraft-free-no-download_GM479516143.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/is-minecraft-dungeons-free_GM479516143.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-online-games-like-minecraft_GM479516143.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/secret-forums-released-free-robux-duplicator-100-working_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/pin-robux-hack_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/my-minecraft-account-was-hacked_GM479516143.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/free-robux-scams_GM431946152.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/coin-master-free-gift-links-2021_GM406889139.pdfIn PDF document text
    • http://www.smkrekayasa-dps.sch.id/new/public/ckfinder/userfiles/files/give-me-robux-now_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_off00002f2c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F2C 22492 bytes
SHA-256: 0e6e5871aca143fec414a8758200e7e1ecdfd7c189359a2af8c7b13a8bdc2000
font_01_sfnt_off00006122.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6122 18656 bytes
SHA-256: 2d759c9c8811e6c0575dd1569354feb394dafb387e5a2f9a3fadbada3c585f82