Malicious PDF — malware analysis report

Static analysis result for SHA-256 0832ae38e1ffb71d…

MALICIOUS

PDF

32.3 KB Created: 2021-07-08 01:22:46 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: b5834118e636cecdb0ab897edf95e769 SHA-1: 22c8f7a24b9819dda588f385cbfdb5bbc7ce62b9 SHA-256: 0832ae38e1ffb71dd50f6504e911869fd8525d0ff5e75e467df1395f2c605c33
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

This PDF document was flagged as malicious by an ML classifier. The file routes users through malicious redirector infrastructure and presents a deceptive download button. Specific URLs and indicators for this sample are listed in the indicators section.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9824

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/robux-com-free-robux-game-hack PDF link annotation
    • https://library.elkatarie.ac.id/repository/robux-plus-live-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/ar-roblox-hacks_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/are-there-any-free-sword-on-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-robux-youtube_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-elemental-battlegrounds-gems-hack_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/how-to-get-free-deadcores-in-labyrinth-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-penguin-suit-roblox_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-apk_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-hack-online-unlimited-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/coin-master-free-coins-and-spins-app_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-geld-hack-deutsch_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/roblox-piano-hack-no-download_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-robux-no-human-verification-no-download-no-offers_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/robux-codes_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/safe-hack-for-coin-master-android_GM406889139.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/free-roblox-clothes-girl_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/minecraft-free-trial_GM479516143.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/the-laughing-unicorn-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/conf-free-robux_GM431946152.pdfIn PDF document text
    • https://library.elkatarie.ac.id/repository/ad-why-cant-have-robux-for-free_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_off00002a8b.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2A8B 21636 bytes
SHA-256: 40622b04ab0a3c608fea40059ab9d37dbc78d0ab761a4c081f61d3f2de6ac57d
font_01_sfnt_off000059ef.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x59EF 18976 bytes
SHA-256: 27896acad5ca474033774e3721745fbaf6546dbb33b60a4a93bb974a81ff43ff

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