Malicious PDF — malware analysis report

Static analysis result for SHA-256 35b5ee09c817a213…

MALICIOUS

PDF

43.9 KB Created: 2021-06-10 11:37:55 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 32ca9d244cf48d4b6216f1ee18759e04 SHA-1: c05634036f36770d4d59228aa855bdc13e4bc85e SHA-256: 35b5ee09c817a2139d9de7e9354f6946489e2e44d35c164761b502828507f87a
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 0.9865

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.tw/app/431946152/774-hack-roblox-2021-game-hack PDF link annotation
    • http://brandyourbody.com/images/minecraft-dungeons-download-free_GM479516143.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-70-spin-link-today_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-codes_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/coin-master-hack-ios-apk_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/free-roblox-hack_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/free-robux-obby_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/how-to-hack-other-players-on-roblox_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/how-to-win-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/robloxmatchcom-free-robux_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/oginject-co_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/free-daily-spins-and-coins-for-coin-master_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/can-i-get-robux-for-free_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/free-redeem-code-for-coin-master_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/roblox-free-vip-gta-5_GM431946152.pdfIn PDF document text
    • http://brandyourbody.com/images/latest-coin-master-free-spins-link_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/25-free-spins-coin-master_GM406889139.pdfIn PDF document text
    • http://brandyourbody.com/images/minecraft-hacked-client-18_GM479516143.pdfIn PDF document text
    • http://brandyourbody.com/images/minecraft-apk-free-download_GM479516143.pdfIn PDF document text
    • http://brandyourbody.com/images/play-minecraft-pocket-edition-for-free_GM479516143.pdfIn PDF document text
    • http://brandyourbody.com/images/minecraft-116-free_GM479516143.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_004_off00004def.bin decompressed-pdf-stream PDF FlateDecoded stream at offset 0x4DEF 24756 bytes
SHA-256: 565d64a0a5931c2b07327bd47a4905cdf280fc6f3e46b28881c2bb705b9c4c94
font_01_sfnt_off00008733.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x8733 18700 bytes
SHA-256: 42fc2da1534581b78694eb0394c7fedaf962ce28e1071d3876c291a1ad8e5be6

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