Malicious PDF — malware analysis report

Static analysis result for SHA-256 4388823106c15a1e…

MALICIOUS

PDF

37.3 KB Created: 2021-06-30 09:57:35 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 3e9cdab33917ded67502e72ab037a4b4 SHA-1: 7816bed4035849a7ae03d870fac4d8b11ab1d52c SHA-256: 4388823106c15a1ef868d882b0affb4013f6f85d6be79e295e4942bb3a51471f
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains multiple embedded URLs, with a primary focus on luring users with 'free generator / game hack' content related to Roblox. The ML classifier strongly indicated maliciousness, and the heuristic firings confirm the presence of external URIs and a game hack lure. While no scripts were explicitly extracted, the PDF structure itself likely facilitates the redirection to these malicious URLs, potentially for malware download or phishing.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9981

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/roblox-catalogue-free-game-hack PDF link annotation
    • http://lib.mappifhui.org/repository/https-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/fast-robux-online_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-download-online_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-game-codes-roblox_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/robux-com-free-robux_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-2021-no-wait-time-not-fake-instant-febuary_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/blue-wistful-wink-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-daily-free-spin-app_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-picture_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/coin-master-free-gift-link-2021_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-robux-on-android_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/roblox-free-modles_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-free-shirts-on-roblox-mobile_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-hack-on-roblox-teacup-hack_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-money-in-roblox-jailbreak_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-download-2021_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/facebook-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/plug-toolbox-for-minecraft-free-ios_GM479516143.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/free-robux-with-no-tests_GM431946152.pdfIn PDF document text
    • http://lib.mappifhui.org/repository/how-to-get-minecraft-realms-for-free_GM479516143.pdfIn PDF document text
    • https://www.roblox.com/.IIn 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_off000039ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x39EF 22948 bytes
SHA-256: ec770a0d80bee0e5cf03271b9df2df2993803854a77859d359b5dfc8b7b45ef7
font_01_sfnt_off00006d87.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6D87 18896 bytes
SHA-256: 16c6d745571ca4aa274f45d49d45dbf685becca19d82cb126fd0c0556c7f8b16

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