Malicious PDF — malware analysis report

Static analysis result for SHA-256 9bda062ada17d636…

MALICIOUS

PDF

35.5 KB Created: 2021-05-22 03:38:01 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 01d6e70d9c62f1b6c9425d8db15103e8 SHA-1: 25c6010ad89a8ebb331d0e2c755ac41b736b7a04 SHA-256: 9bda062ada17d636fd5fa15bbb549d6dd2e81e21d48e633c901a9060a2cddd9f
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 0.9492

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/best-free-minecraft-servers-game-hack PDF link annotation
    • http://svadba-moda.kg/images/free-minecraft-account-reddit_GM479516143.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-change-your-username-in-roblox-for-free_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/mobihack-roblox-hack_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/robux-hack-me_GM431946152.pdfIn PDF document text
    • http://svadba-moda.kg/images/how-to-hack-someone-on-roblox_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
stream_002_off000032da.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x32DA 24480 bytes
SHA-256: b702d9787dfb4a17e67b0ba7b77b5bb0e451281e1bea8f6c263f511216d8760c
font_01_sfnt_off00006ab3.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x6AB3 17896 bytes
SHA-256: c529f757d6b4a4f9c7840ecb5b6035c813da3045ee3b560268268dab20db1aa9

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