Malicious PDF — malware analysis report

Static analysis result for SHA-256 d2f32c63dc31f07e…

MALICIOUS

PDF

32.2 KB Created: 2021-07-20 03:27:54 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 01e71219780b12ebecf9e4a0ab817ea7 SHA-1: 0154451c10d8838f92c0e4edfc2c14f0ed21e973 SHA-256: d2f32c63dc31f07e91d204e11958d5960f7dc42e6b39f357db333b4d52bbab8b
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 0.9900

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://w-i-r.de/images/robux-hack-tools_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/free-robux-no-download_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/how-to-get-minecraft-pe-for-free_GM479516143.pdfIn PDF document text
    • https://w-i-r.de/images/free-fans-on-tiktok_GM835599320.pdfIn PDF document text
    • https://w-i-r.de/images/is-minecraft-java-edition-free_GM479516143.pdfIn PDF document text
    • https://w-i-r.de/images/ways-to-get-free-robux_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/tiktok-minecraft-hacks_GM479516143.pdfIn PDF document text
    • https://w-i-r.de/images/minecraft-com-free_GM479516143.pdfIn PDF document text
    • https://w-i-r.de/images/free-robux-codes-2021_GM431946152.pdfIn PDF document text
    • https://w-i-r.de/images/how-to-get-free-robux-on-phone_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_off00002884.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2884 22756 bytes
SHA-256: 05818a8574bb9d8417cb65dc0941576ca6ed762d4d6360be23ec10fdacc9895b
font_01_sfnt_off00005b6d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5B6D 18460 bytes
SHA-256: 4a32e366c4d91d7d134c7dbb73cf2529d0f331c5de2309c0ca0f4850ac867bfa

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