Malicious PDF — malware analysis report

Static analysis result for SHA-256 aa72cf74214c6402…

MALICIOUS

PDF

34.9 KB Created: 2021-07-05 16:55:16 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-29
MD5: 5d8ddba15854ca05ae01b25042bee33b SHA-1: 189646d6dc486dff8c08e4e2412e920cc178ffa1 SHA-256: aa72cf74214c64022d73e344e40c7d71d325618411b58e5965dfabf3aa81a23a
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 0.9980

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.tw/app/431946152/roblox-avatar-free-game-hack PDF link annotation
    • https://tckontrola.hr/files/coin-master-hack-app-for-iphone_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/coin-master-hack-ios-without-verification_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/http-bit-ly-coin-master-hack_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/pokemon-go-free-key_GM1094591345.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-hack-coin-master-facebook_GM406889139.pdfIn PDF document text
    • https://tckontrola.hr/files/free-spins-on-coin-masters_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/robux-hack-sin-verificacion-de-humano_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/rasberry-roblox-hack_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/easy-how-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/how-to-get-free-robux-not-a-scam_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-3533-android-hack_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/robux-com-free_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/new-figer-hack-pastebin-roblox_GM431946152.pdfIn PDF document text
    • https://tckontrola.hr/files/roblox-t-shirt-free_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/free-coin-master-spins-2021_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/blox-fish-free-robux_GM431946152.pdfIn PDF document text
    • http://tckontrola.hr/files/village-coin_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/coin-master-levels_GM406889139.pdfIn PDF document text
    • http://tckontrola.hr/files/how-to-hack-robux_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_off0000304c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x304C 23080 bytes
SHA-256: 98aada9faeee66ff111bb86c1a473a28b586d11e998728945a31fdeee03a9256
font_01_sfnt_off000063f1.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63F1 18868 bytes
SHA-256: df626e97bf99c12ae2e2dc853053f4c46c230974655dd31d8497af8766a9dbba

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