Malicious PDF — malware analysis report

Static analysis result for SHA-256 e8a716867d3f5542…

MALICIOUS

PDF

33.1 KB Created: 2021-06-29 00:40:11 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-24
MD5: db49c3e296ad46a02618a60ca5e4c0e8 SHA-1: 23427f8012b528b90ef22a0921c8ca82bda30d4e SHA-256: e8a716867d3f55424a2186fed6d38d70874c5f797f3fced690cad5606b197e1f
160 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a lure for free Robux and game hacks, which is a common social engineering tactic. It embeds a URL that points to a known malicious redirector, designed to lead users to potentially harmful content or further malware. The ML classifier also strongly indicated maliciousness.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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.co/app/431946152/free-robux-no-offers-or-survey-2021-game-hack In PDF document text
    • https://library.iuli.ac.id/repository/free-op-minecraft-servers_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-robux-100-life-free-for-roblox_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-daethrun-hollowenn-update-cheat_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-can-i-get-free-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/coin-master-download-hack_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/do-you-earn-robux-for-taking-free-items_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/collect-robux_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-minecraft-pe-server_GM479516143.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-arsenal-hacks-free_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/free-roblox-hack-app_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-get-free-robux-games-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-clone-tycoon-2-hack_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/what-do-roblox-points-do_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-how-to-get-free-membership_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/how-to-fly-hack-roblox-2021_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-for-free-on-google_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/apocalypse-rising-roblox-cheats_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/roblox-robux-generator-tool_GM431946152.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/cm-free-spins_GM406889139.pdfIn PDF document text
    • https://library.iuli.ac.id/repository/como-hackear-coin-master-en-espaol_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_off00002a50.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A50 22236 bytes
SHA-256: 735781c8ba5dabf3034e388215933914c26a77c85bea1e8935a8a48a74aea3bf
font_01_sfnt_off00005b68.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B68 19412 bytes
SHA-256: cb1e6b29dc622264f8c0d3a0c34a51d862034f05493be36b0264d198b4b9856b

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