Malicious PDF — malware analysis report

Static analysis result for SHA-256 87438d05edeebaa2…

MALICIOUS

PDF

34.9 KB Created: 2021-05-23 23:10:36 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-17
MD5: 2a07cc49fd11880c7b9b0db3ae536298 SHA-1: ed1f5d6e8dd2a6b74d28d12a61b6cace68f0d072 SHA-256: 87438d05edeebaa2772ca57001e40000fce8470caff6c8face700b6d1cb41059
82 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment

The PDF document contains a prominent link and call-to-action text related to 'free game hacks' and 'generators', specifically mentioning Minecraft Java. This lure is designed to trick users into navigating to a potentially malicious URL. The ML classifier also flagged this PDF as malicious, supporting the assessment of a malicious intent.

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/minecraft-java-free-game-hack PDF link annotation
    • https://www.summerland.com.tw/upload/files/coin-master-free-spins-without-human-verification_GM406889139.pdfIn PDF document text
    • https://www.summerland.com.tw/upload/files/coin-master-free-spins-link-blogspot_GM406889139.pdfIn PDF document text
    • https://www.summerland.com.tw/upload/files/robloxbux-us-generator_GM431946152.pdfIn PDF document text
    • https://www.summerland.com.tw/upload/files/free-robux-android_GM431946152.pdfIn PDF document text
    • https://www.summerland.com.tw/upload/files/free-robux-videos_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_off000030af.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x30AF 24440 bytes
SHA-256: 2e03c288c2427456fb5b16a3accc4abd06eac40e74c67f1bfc01dcb6d004ef6c
font_01_sfnt_off0000688c.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x688C 17848 bytes
SHA-256: c651dee67b00b36100d0c208f30a7974f38e9c4fefacd489da3c8fda34869f62

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