Malicious PDF — malware analysis report

Static analysis result for SHA-256 0587bf7087cbc307…

MALICIOUS

PDF

35.6 KB Created: 2021-05-25 08:31:04 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-18
MD5: 3defa10f41a367cf5fe5aef5e894d789 SHA-1: 80eea9b5eeeaecdfdce5b3423ee907844194b876 SHA-256: 0587bf7087cbc307616e12c582fba4dbf6cff3f38ed212a3c97924cbc95ee1b6
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 0.9648

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/479516143/how-to-get-minecraft-windows-10-for-free-2021-game-hack PDF link annotation
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-minecraft-java-edition-for-free_GM479516143.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/free-robux-no-verification_GM431946152.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/pokemon-go-free-kr-hack_GM1094591345.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/pokemon-go-free-999_GM1094591345.pdfIn PDF document text
    • https://baligaoritour.com/new/public/ckfinder/userfiles/files/how-to-get-free-tiktok-followers_GM835599320.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
stream_002_off00003256.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x3256 23952 bytes
SHA-256: 6080b57d6bb637153206dc8ba6dadf15f0bbf65c1d2c26a84b1b0a07ea9f55e1
font_01_sfnt_off00006896.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6896 18648 bytes
SHA-256: 354bb2c2c4fae14b5c7df711c8f5a389dfe67cd832e4a835714c7b2f7ea7fa4d

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