Malicious PDF — malware analysis report

Static analysis result for SHA-256 735399937701dd73…

MALICIOUS

PDF

34.0 KB Created: 2021-07-06 00:37:03 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-31
MD5: 3e08860fb1cb8210698dddc7b160b11b SHA-1: 47bc269fa44579d84afd6720ce603801688d7606 SHA-256: 735399937701dd730a99305d1b79a56eeea8a85c4ae82b2c70e411b016e8af09
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a critical heuristic firing for a game hack redirector lure, pointing to malicious infrastructure. The document body explicitly contains the URL http://netcdn.tw/app/406889139/como-descargar-coin-master-hackeado-game-hack, which is also listed as a known malicious redirector link. This suggests the primary purpose is to trick users into visiting a malicious site, likely for further exploitation or malware delivery.

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/como-descargar-coin-master-hackeado-game-hack In PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-legeal-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/pubg-uc-with-paypal_GM1330123889.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-t-shirt-free-adidas_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-free-box_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-game_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/how-to-hack-to-get-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/android-coin-master-3433-apk-hack_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-without-root_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/roblox-hack-download_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/can-i-get-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-root-hack_GM406889139.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-links-for-today_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/cheat-roblox-prison-break_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/hack-app-robux_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/coin-master-hack-blog_GM406889139.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/r67-roblox-hack_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/how-to-get-free-robux-on-android-tablet_GM431946152.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/minecraft-building-hacks_GM479516143.pdfIn PDF document text
    • http://pustaka.pn-calang.go.id/repository/money-cheats-for-rocitizens-in-roblox_GM431946152.pdfIn PDF document text
    • http://www.pustaka.pn-calang.go.id/repository/free-roblox-exploiting_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_off00002f1a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2F1A 22424 bytes
SHA-256: dd80a1546ae0d087d6f575263d0d6c8dd0577a4e0d0fb4cf43be30e044488804
font_01_sfnt_off0000610a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x610A 18608 bytes
SHA-256: 273d41d88432b6d87e59efd361e089033260b5d78b02efdcc86ebc19e8e3d3d9

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