Malicious PDF — malware analysis report

Static analysis result for SHA-256 603436dee5591f78…

MALICIOUS

PDF

33.8 KB Created: 2021-07-19 14:34:41 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 243f5aaa2e2efb59439f624946249a0e SHA-1: cd6e8ec1d686971331ea78ed73db193997c476bf SHA-256: 603436dee5591f78389869ebbc51b03419b6cc74e7e651caf203df2abc5a4025
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 User Execution: Malicious Link

This PDF document employs a common social engineering tactic by luring users with promises of 'free Robux' and 'game hacks'. The document contains a link that redirects to a malicious URL, likely serving as a gateway to further malicious content or exploits. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the use of a game hack lure to drive user interaction with a suspicious URI.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9946

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.tw/app/431946152/free-robux-no-verification-no-download-game-hack PDF link annotation
    • https://ceiprevellodetoro.org/images/free-robux-2021_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/coin-master-daily-free-spins_GM406889139.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-minecraft-accounts-reddit_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/how-to-get-verified-on-tiktok-for-free_GM835599320.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/robux-hack_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/minecraft-login-free_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/minecraft-free-download-unblocked_GM479516143.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/free-robux-no-password_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/roblox-free-robux-codes_GM431946152.pdfIn PDF document text
    • https://ceiprevellodetoro.org/images/minecraft-free-ios_GM479516143.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_off00002d02.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2D02 22504 bytes
SHA-256: 4e9e0f1eab9ed657d0b8e01f5ed3d0f0377428f37f82d77d7f37a9821b8843e1
font_01_sfnt_off00005ed4.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5ED4 19368 bytes
SHA-256: d3e2a0be71fa1195b8df5e17c1e8fb83919ae69834ad70429f1dcd21d008a8b3

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