Malicious PDF — malware analysis report

Static analysis result for SHA-256 f42ce098a8a7bd50…

MALICIOUS

PDF

34.8 KB Created: 2021-06-28 21:56:15 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 6e49ef16b1894d53090ef1c894490778 SHA-1: 0bd97e94e65839bef432c89cec41ba8b202be12d SHA-256: f42ce098a8a7bd5066c8647335f38e0a8593ddf1c47e0a5727fa962d95724402
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The PDF document uses a lure related to game hacks and free in-game currency to entice users. It contains an embedded URI pointing to 'http://netcdn.co/app/431946152/prison-break-hack-script-roblox-game-hack', which is flagged as a high-risk redirector. This suggests the document is designed to lead the user to a malicious site, likely for downloading further malware or exploiting vulnerabilities.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9980

Heuristics 4

  • PDF links to a 'free generator / game hack' redirector high 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.
  • 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
  • External URI info PDF_URI
    PDF contains an external URL action
  • 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/prison-break-hack-script-roblox-game-hack PDF link annotation
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/flob-fun-roblox-hacker_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/how-to-hack-a-roblox-account-with-cheat-engine_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-clothing-roblox-group_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/simple-ways-to-get-robux-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-daily-spins-coin-master_GM406889139.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/boostgamesnet-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-robux-com_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-how-to-get-free-robux-no-hack-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-getting-items-for-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/best-free-roblox-level-7-full-lua-eecutor-august-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/funny-free-roblox-rthro-avatars_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/free-skateboarding-game-on-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-in-jail-breck_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/april-2021-roblox-hacking_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/roblox-free-accessories-2021_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/beast-mode-face-roblox-free_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/hack-roblox-2021-script_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/best-jailbreak-hack-roblox_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/allintittlefree-robux_GM431946152.pdfIn PDF document text
    • https://elearning.man1tuban.sch.id/__statics/gudangsoal/files/how-to-get-free-robux-on-mobile_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_off000031c2.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x31C2 21964 bytes
SHA-256: 9913b9547e332c86e6fcfdde8a8b750eb1e2ec630d1375a354ef99261505b0b9
font_01_sfnt_off0000624c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x624C 19212 bytes
SHA-256: 71eb850a14e9b441cc154cd1a2774d4b4bff537ce5d129de93ac942926c3fcbc

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