Malicious PDF — malware analysis report

Static analysis result for SHA-256 ccd20ce4eb5d7ed4…

MALICIOUS

PDF

44.3 KB Created: 2021-05-21 03:31:08 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-10-02
MD5: 8e2ef047c5c485f8608193d9e00b9a20 SHA-1: 0acf72b5bfd05807937ed92a2c0501f48038cddf SHA-256: ccd20ce4eb5d7ed4e3453ee2337297d3ba4984137a387bd82d3d771b7a4f0093
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 0.7947

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 https://netcdn.xyz/app/431946152/free-vip-roblox-game-hack PDF link annotation
    • http://seniorenverband-brh-nds.de/images/haktuts-coin-master-free-daily-spins_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/tiktok-unicorn-free-download_GM835599320.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/free-coinmaster-spins_GM406889139.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/how-to-get-minecoins-in-minecraft-for-free_GM479516143.pdfIn PDF document text
    • http://seniorenverband-brh-nds.de/images/coin-master-free-spins-only_GM406889139.pdfIn PDF document text
    • http://en.wikipedia.org/wiki/MIT_LicenseIn PDF document text

Extracted artifacts 4

Files carved from inside the sample during analysis.

FilenameKindSourceSize
stream_002_off00003511.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3511 27364 bytes
SHA-256: b8029cc166baf0978dd61e220ec6cb3e9a4c14ae77c9a9a70b8cc77c77695f1d
font_01_sfnt_off0000741a.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741A 2984 bytes
SHA-256: 889cfc2fd0afa9ea114d6666204c6ce0548d0aae2cba345827d317498c4c06bc
font_02_sfnt_off00007e40.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x7E40 5696 bytes
SHA-256: 450e3ee45915afe13702bf1d587eb8b9ad88a8d2113419ac9f2fd116a828e139
font_03_sfnt_off00008b52.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8B52 18380 bytes
SHA-256: 94d125d3dbde40cc9d5054aafe15a05973ae878bc41c5e9bff003f3b9c84471a

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