Malicious PDF — malware analysis report

Static analysis result for SHA-256 8ae11abcefacf063…

MALICIOUS

PDF

32.7 KB Created: 2021-07-19 23:25:30 +07:00 Authoring application: wkhtmltopdf 0.12.6 (via Qt 4.8.7) First seen: 2021-09-25
MD5: 0c499c1ff2e9f36c0d6d35df9eee8763 SHA-1: d99d0bab3f7b5566896891ec6da8a1ae3eb4bd35 SHA-256: 8ae11abcefacf063b831dddf4ce2020bdac8b17a206ec5ec1deff49f4daf1cf9
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 0.9900

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 http://netcdn.tw/app/431946152/how-to-hack-roblox-to-get-robux-game-hack PDF link annotation
    • https://garciamadeirascampinas.com.br/images/how-to-hack-coin-master_GM406889139.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/free-coins-coin-master-2021_GM406889139.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/how-to-get-minecraft-for-free-ios_GM479516143.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/free-tiktok-followers_GM835599320.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/minecraft-java-free-trial_GM479516143.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/get-free-likes-on-tiktok_GM835599320.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/coin-master-15-free-spin-link-of-last-5-days_GM406889139.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/roblox-hack-tool_GM431946152.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/how-to-get-minecraft-for-free-on-pc_GM479516143.pdfIn PDF document text
    • https://garciamadeirascampinas.com.br/images/codes-to-get-free-robux_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
font_00_sfnt_off00002ba5.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x2BA5 21996 bytes
SHA-256: 2f60e6c3b7b460e5d87897a890df5b7dd7c967a65b7dbf9f04866a423a9c9c32
font_01_sfnt_off00005c09.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5C09 18776 bytes
SHA-256: 578b373aa423cb9d98cc6cf60d475741153d940cfb786bc6bb83321400a66c6d

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