Malicious PDF — malware analysis report

Static analysis result for SHA-256 614f80c4ba31c6bf…

MALICIOUS

PDF

34.2 KB Created: 2021-07-04 02:33:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-27
MD5: 9317e76234b75b8d9a33b05cabf3c27a SHA-1: dedf07deed23d605275551148121c8bca67e2f37 SHA-256: 614f80c4ba31c6bf95040090f589b462e18d60335226fa1f08337278417f8857
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF contains a malicious redirector link disguised as a game hack generator, aiming to lure users into clicking it. The document body and heuristics indicate a scam related to free game currency or cheats. No scripts were extracted, but the embedded URL is a primary indicator 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/406889139/free-coins-coin-master-2021-game-hack In PDF document text
    • http://www.perpusffup.or.id/repository/redeem-hack-roblox-2021-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-login-hack_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-hack-app_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-spins-coin-master-links-blogspot_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-minecraft-server-hosting-with-plugins_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-roblox-gift-cards-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-no-verification-on-ipad_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/comment-utiliser-cheat-engine-sur-roblox-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/adopt-me-roblox-hack-gui-trolling_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-hack-dungueon-questcom_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/how-to-get-free-robux-28-august-2021_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-hack-2021-download_GM406889139.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-robux-cards_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-roblox-hair-not-model_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/get-minecraft-windows-10-free_GM479516143.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/free-roblox-apk_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/make-free-robux_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-brightness-hack_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/roblox-money-hack_GM431946152.pdfIn PDF document text
    • http://www.perpusffup.or.id/repository/coin-master-free-redeem-code_GM406889139.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_off00002fcf.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2FCF 22636 bytes
SHA-256: 2103c1971e591fb41561decc67ff08e5a9be2655acb5f400feed484bfd61d826
font_01_sfnt_off0000625e.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x625E 18400 bytes
SHA-256: 2a3e6040a3b782e95a9624477cdba266f2d22bc61ba2df799c05fa910d77e25c